I have a datalist in my ASP.Net web form. The datalist has an image button and a hyperlink. These things are kept in the item template in the datalist. I want to get the id of the row in which the image is clicked. Here is my ASP.Net code
<div height="100%" width="100%" class="w3-center">
<asp:DataList ID="DataList1" runat="server" OnItemCommand="DataList1_ItemCommand" OnSelectedIndexChanged="DataList1_SelectedIndexChanged1" >
<HeaderTemplate></HeaderTemplate>
<ItemTemplate>
<asp:ImageButton ID="ImageButton1" runat="server" ImageUrl='<%#Eval("Image_path") %> ' CommandName="Item" CommandArguement='<%#Eval("Catg_Id") %>' Height="200" Width="350" NavigateUrl='<%#String.Concat("SelectedCatg.aspx?category=",Eval("Catg_Name")) %>'/><br />
<asp:HyperLink runat="server" NavigateUrl='<%#String.Concat("SelectedCatg.aspx?category=",Eval("Catg_Name")) %>' CssClass="link" Font-Size="18"><%#Eval("Catg_name") %></asp:HyperLink>
</ItemTemplate>
<FooterTemplate></FooterTemplate>
</asp:DataList>
</div>
I have itemCommand event but it doesn't catch the event on clicking the image button.
protected void DataList1_ItemCommand(object source, DataListCommandEventArgs e)
{
ScriptManager.RegisterClientScriptBlock(this, this.GetType(), "alertMessage", "alert('Record Inserted Successfully')", true);
String index=e.CommandArgument.ToString();
Response.Redirect("~/SelectedCatg.aspx?id=" + index);
/* if (e.CommandName.Equals("img"))
{
int AnswerId = Convert.ToInt32(DataList1.DataKeys[e.Item.ItemIndex].ToString());
}*/
}
Need help.
Thanks
This is how I bind my datalist
String conString = ConfigurationManager.ConnectionStrings["con"].ToString();
con = new SqlConnection(conString);
con.Open();
String query = "Select * from Category_Master";
cmd = new SqlCommand(query,con);
dr = cmd.ExecuteReader();
dt = new DataTable();
dt.Load(dr);
DataList1.DataSource = dt;
DataList1.DataBind();
did you try which command was fired? check this and let me know the result please.
protected void DataList1_ItemCommand(object source, DataListCommandEventArgs e)
{
if (e.CommandName == "Item")
{
int index= Convert.ToInt32(e.CommandArgument);
Response.Redirect("~/SelectedCatg.aspx?id=" + index);
}
}
Related
<div class="container">
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" Font-Size="Medium">
<asp:TemplateField HeaderText="Student ID">
<ItemTemplate>
<asp:Label ID="lblID" runat="server" Width="80px" Text='<%#Eval("studentID") %>'/>
</ItemTemplate>
<asp:TemplateField HeaderText="">
<ItemTemplate>
<asp:LinkButton runat="server" OnCommand="LinkButton_Click" Text=" VoteCandidate"> </asp:LinkButton>
</ItemTemplate>
</asp:GridView>
<div>
<asp:Label ID="Label1" runat="server" ></asp:Label>
</div>
</div>
Here is my form to show the gridview.
protected void loadCandidate()
{
con.Open();
MySqlCommand cmd = new MySqlCommand("select studentID from candidate where faculty='FOCS'", con);
MySqlDataReader dr = cmd.ExecuteReader();
if (dr.HasRows == true)
{
GridView1.DataSource = dr;
GridView1.DataBind();
}
}
protected void LinkButton_Click(Object sender, EventArgs e)
{
String MyConnection2 = "Server=localhost;database=ovs;Uid=root;password=; Convert Zero Datetime=True";
foreach (GridViewRow g1 in GridView1.Rows)
{
MySqlConnection MyConn2 = new MySqlConnection(MyConnection2);
String query = "insert into voting (studentID)values ('" + g1.Cells[0].Text + "')" ;
MySqlCommand MyCommand2 = new MySqlCommand(query, MyConn2);
MySqlDataReader MyReader2;
MyConn2.Open();
MyReader2 = MyCommand2.ExecuteReader();
MyConn2.Close();
}
}
When I execute the sql insert command, no error occur, but I expect the studentID that displayed in the gridview being stored in the voting table, but the studentID on the voting table are empty.
Since you use a template field in your GridView, you can't use the cell directly, you need to look for the label inside the cell like this:
foreach (GridViewRow g1 in GridView1.Rows)
{
Label lblStudentId = (Label)g1.Cells[0].FindControl("lblID");
string studentId = lblStudentId.Text;
// now proceed with your inserting.
}
But if you using the loop the way you do it right now, there will be an insert for every row in the GridView, not only for the one you clicked on...
If you want to get the Id for the row the LinkButton is in, don't iterate over the rows. Instead use the NamingContainer-property of the sender like this:
LinkButton linkButton = (LinkButton)sender;
GridViewRow g1 = (GridViewRow)linkButton.NamingContainer;
Label lblStudentId = (Label)g1.Cells[0].FindControl("lblID");
string studentId = lblStudentId.Text;
// now proceed with your inserting.
For more details look at this question and answer
I have got a Gridview which gets populated with multiple rows as follows where user is allowed to edit Alternate names for the viewed rows after he can bulk save the edited columns.
I tried achieving this using Edit template but I could not achieve this because when the user tries to edit the next row immediately the previous "edited" column contents are erased back to original.
How can I achieve this using gridview
On edit action of the GridView, your change happens only on your browser (client side) until you save the change of current row. You need to save the row and refresh GridView to begin editing the next row.
The typical implementation is to place two button on Edit template - Cancel and Save button to commit the change of the edited row. When clicking on the save button, your postback event will be picked up on server side code (with event argument e that contain which row was on edit and row data that you updated). You save the data to database and refresh the GridView. At that moment, you should be able to see the GridView with updated content. You are ready to click on the Edit button of the next row.
Use this and Edit According to you this is working for me perfectly.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.6/jquery.min.js" type="text/javascript"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/jquery-ui.min.js" type="text/javascript"></script>
<link href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/themes/base/jquery-ui.css" rel="Stylesheet" type="text/css" />
<script type="text/javascript">
$(function () {
$("[id$=txtRecievedDate]").datepicker({
showOn: 'button',
buttonImageOnly: true,
dateFormat: "yy-mm-dd",
buttonImage: 'http://jqueryui.com/demos/datepicker/images/calendar.gif'
});
});
</script>
<style type = "text/css">
input[type=text], select{background-color:#FFFFD2; border:1px solid #ccc}
</style>
</head>
<body style = "font-family:Arial;font-size:10pt">
<form id="form1" runat="server">
<asp:GridView ID="gvCustomers" runat="server" AutoGenerateColumns="false"
DataKeyNames = "id" onrowdatabound="gvCustomers_RowDataBound">
<Columns>
<asp:TemplateField>
<HeaderTemplate>
<asp:Label ID="Label1" runat="server" Text="SelectEdit"></asp:Label>
<asp:CheckBox ID = "chkAll" runat="server" AutoPostBack="true" OnCheckedChanged="OnCheckedChanged" />
</HeaderTemplate>
<ItemTemplate>
<asp:CheckBox runat="server" AutoPostBack="true" OnCheckedChanged="OnCheckedChanged" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="ID" ItemStyle-Width = "150">
<ItemTemplate>
<asp:Label ID="lblId" runat="server" Text='<%# Eval("id") %>'></asp:Label>
<asp:TextBox ID="txtID" runat="server" Text='<%# Eval("id") %>' ReadOnly="true" Visible="false"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Cartridge Set No" ItemStyle-Width = "150">
<ItemTemplate>
<asp:Label ID="lblCartridgeSetNo" runat="server" Text='<%# Eval("CartridgeSetNo") %>'></asp:Label>
<asp:TextBox ID="txtCartridgeSetNo" runat="server" Text='<%# Eval("CartridgeSetNo") %>' ReadOnly="true" Visible="false"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Status" ItemStyle-Width = "150">
<ItemTemplate>
<asp:Label ID = "lblcurrentstatus" runat="server" Text='<%# Eval("currentstatus") %>'></asp:Label>
<asp:Label ID = "lblstatus" runat="server" Text='<%# Eval("status") %>' Visible = "false"></asp:Label>
<asp:DropDownList ID="ddlstatus" runat="server" Visible = "false">
</asp:DropDownList>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="date Recieved" ItemStyle-Width = "150">
<ItemTemplate>
<asp:Label ID="Label2" runat="server" Text='<%# Eval("dateRecieved") %>'></asp:Label>
<asp:TextBox ID="txtRecievedDate" runat="server" Text='<%# Eval("dateRecieved") %>' Visible="false"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Comments" ItemStyle-Width = "150">
<ItemTemplate>
<asp:Label ID="lblComments" runat="server" Text='<%# Eval("comments") %>'></asp:Label>
<asp:TextBox ID="txtComments" runat="server" Text='<%# Eval("comments") %>' Visible="false"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<br />
<asp:Button ID="btnUpdate" runat="server" Text="Update" OnClick = "Update" Visible = "false"/>
</form>
</body>
</html>
CS file
using System;
using System.Web.UI.WebControls;
using System.Data;
using System.Linq;
using System.Configuration;
using System.Data.SqlClient;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
this.BindGrid();
}
}
private void BindGrid()
{
SqlCommand cmd = new SqlCommand("SELECT [Id],[CartridgeSetNo],[status] ,[dateRecieved],[Comments] ,case when status = 1 then 'Received but not usable' when status = 0 then 'Received and Usable' else 'Not Received' end as currentstatus FROM DrugAllocate ");
gvCustomers.DataSource = this.ExecuteQuery(cmd, "SELECT");
gvCustomers.DataBind();
}
private DataTable ExecuteQuery(SqlCommand cmd, string action)
{
string conString = ConfigurationManager.ConnectionStrings["constring"].ConnectionString;
using (SqlConnection con = new SqlConnection(conString))
{
cmd.Connection = con;
switch (action)
{
case "SELECT":
using (SqlDataAdapter sda = new SqlDataAdapter())
{
sda.SelectCommand = cmd;
using (DataTable dt = new DataTable())
{
sda.Fill(dt);
return dt;
}
}
case "UPDATE":
con.Open();
cmd.ExecuteNonQuery();
con.Close();
break;
}
return null;
}
}
protected void Update(object sender, EventArgs e)
{
foreach (GridViewRow row in gvCustomers.Rows)
{
if (row.RowType == DataControlRowType.DataRow)
{
bool isChecked = row.Cells[0].Controls.OfType<CheckBox>().FirstOrDefault().Checked;
if (isChecked)
{
SqlCommand cmd = new SqlCommand("UPDATE DrugReceipt SET Comments=#Comments, dateRecieved=#dateRecieved , status = #status where Id = #Id");
cmd.Parameters.AddWithValue("#Comments", row.Cells[5].Controls.OfType<TextBox>().FirstOrDefault().Text);
string status = row.Cells[3].Controls.OfType<DropDownList>().FirstOrDefault().SelectedItem.Value;
if (status == "Received and Usable")
{
status="0";
}
if (status == "Received but not usable")
{
string comments=row.Cells[5].Controls.OfType<TextBox>().FirstOrDefault().Text;
status = "1";
if (comments == "")
{
ClientScript.RegisterStartupScript(this.GetType(), "myalert", "alert('comment is mendatry');", true);
break;
}
}
if (status == "Not Received")
{
status = "2";
}
cmd.Parameters.AddWithValue("#status", status);
cmd.Parameters.AddWithValue("#dateRecieved", row.Cells[4].Controls.OfType<TextBox>().FirstOrDefault().Text);
cmd.Parameters.AddWithValue("#Id", gvCustomers.DataKeys[row.RowIndex].Value);
this.ExecuteQuery(cmd, "UPDATE");
}
}
}
btnUpdate.Visible = false;
this.BindGrid();
}
public DataSet GetYesNoValue(string ColumnName)
{
DataTable dtVal = new DataTable();
DataColumn column;
column = new DataColumn();
column.DataType = System.Type.GetType("System.String");
column.ColumnName = ColumnName;
dtVal.Columns.Add(column);
DataSet dsVal = new DataSet();
dtVal.Rows.Add("Received and Usable");
dtVal.Rows.Add("Received but not usable");
dtVal.Rows.Add("Not Received");
dsVal.Tables.Add(dtVal);
return dsVal;
}
protected void OnCheckedChanged(object sender, EventArgs e)
{
bool isUpdateVisible = false;
CheckBox chk = (sender as CheckBox);
if (chk.ID == "chkAll")
{
foreach (GridViewRow row in gvCustomers.Rows)
{
if (row.RowType == DataControlRowType.DataRow)
{
row.Cells[0].Controls.OfType<CheckBox>().FirstOrDefault().Checked = chk.Checked;
}
}
}
CheckBox chkAll = (gvCustomers.HeaderRow.FindControl("chkAll") as CheckBox);
chkAll.Checked = true;
foreach (GridViewRow row in gvCustomers.Rows)
{
if (row.RowType == DataControlRowType.DataRow)
{
bool isChecked = row.Cells[0].Controls.OfType<CheckBox>().FirstOrDefault().Checked;
for (int i = 1; i < row.Cells.Count; i++)
{
row.Cells[i].Controls.OfType<Label>().FirstOrDefault().Visible = !isChecked;
if (row.Cells[i].Controls.OfType<TextBox>().ToList().Count > 0)
{
row.Cells[i].Controls.OfType<TextBox>().FirstOrDefault().Visible = isChecked;
}
if (row.Cells[i].Controls.OfType<DropDownList>().ToList().Count > 0)
{
row.Cells[i].Controls.OfType<DropDownList>().FirstOrDefault().Visible = isChecked;
}
if (isChecked && !isUpdateVisible)
{
isUpdateVisible = true;
}
if (!isChecked )
{
chkAll.Checked = false;
}
}
}
}
btnUpdate.Visible = isUpdateVisible;
}
protected void gvCustomers_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
SqlCommand cmd = new SqlCommand("SELECT status, case when status = 1 then 'Received but not usable' when status = 0 then 'Received and Usable' else 'Not Received' end as statuscurrent FROM DrugAllocate");
DropDownList ddlstatus = (e.Row.FindControl("ddlstatus") as DropDownList);
ddlstatus.DataSource = this.ExecuteQuery(cmd, "SELECT");
string country = (e.Row.FindControl("lblstatus") as Label).Text;
DataSet ds = new DataSet();
ds = GetYesNoValue("suppStatus");
DataTable dt = new DataTable();
dt = ds.Tables[0];
ddlstatus.DataSource = dt;
ddlstatus.DataTextField = "suppStatus";
ddlstatus.DataValueField = "suppStatus";
ddlstatus.DataBind();
try
{
ddlstatus.Items.FindByValue(country).Selected = true;
}
catch { }
}
}
}
I am making an application about article publication. I have 2 tables
"artikulli"
id int Unchecked
tema varchar(250) Checked
abstrakti text
data_publikimit date
path varchar(350)
keywords varchar(350)
kategoria_id int
departamenti_id int
"kategorite"
id int Unchecked
emertimi varchar(350)
I want to display in a dropdown list all values of field "emertimi" and when the user selects one value to save id of that value in table "artikulli".
I have done the following, but I have the problem with syntax because I am using DATALIST.
public partial class AddArticle : System.Web.UI.Page
{
string connection = System.Configuration.ConfigurationManager.ConnectionStrings["ConnectionStringDatabase"].ConnectionString;
protected void Page_Load(object sender, EventArgs e)
{
Page.Form.Attributes.Add("enctype", "multipart/form-data");
try
{
if (!IsPostBack)
{
Bind();
}
}
catch (Exception ex)
{
Response.Write("Error:" + ex.ToString());
}
}
public void Bind()
{
SqlConnection con = new SqlConnection(connection)
string Qry = "select * from kategoria";
SqlDataAdapter da = new SqlDataAdapter(Qry, con);
DataSet ds = new DataSet();
DropDownList drpdKategoria = e.Item.FindControl("drpdKategoria") as DropDownList;
con.Open();
da.Fill(ds);
drpdKategoria.DataSource = ds;
drpdKategoria.DataValueField = "id"; // Value of bided list in your dropdown in your case it will be CATEGORY_ID
drpdKategoria.DataTextField = "emertimi"; // this will show Category name in your dropdown
drpdKategoria.DataBind();
con.Close();
con.Dispose();
ds.Dispose();
da.Dispose();
}
protected void datalist2_ItemCommand(object source, DataListCommandEventArgs e)
{
if (e.CommandName.Equals("Insert"))
{
TextBox txtTema = e.Item.FindControl("txtTema") as TextBox;
TextBox txtAbstrakti = e.Item.FindControl("txtAbstrakti") as TextBox;
TextBox txtData = e.Item.FindControl("txtData") as TextBox;
TextBox txtKeywords = e.Item.FindControl("txtKeywords") as TextBox;
DropDownList drpdKategoria = e.Item.FindControl("drpdKategoria") as DropDownList;
SqlConnection conn = new SqlConnection(connection);
SqlCommand command = new SqlCommand();
command.Connection = conn;
command.CommandText = "Insert into artikulli(tema,abstrakti,data_publikimit,path,keywords,kategoria_id) values (#tema,#abstrakti,#data,#filename,#keywords,#kategoria)";
command.Parameters.Add(new SqlParameter("#tema", txtTema.Text));
command.Parameters.Add(new SqlParameter("#abstrakti", txtAbstrakti.Text));
command.Parameters.Add(new SqlParameter("#data", txtData.Text));
command.Parameters.Add(new SqlParameter("#keywords", txtKeywords.Text));
command.Parameters.Add(new SqlParameter("#kategoria", drpdKategoria.SelectedValue));
FileUpload FileUploadArtikull = (FileUpload)e.Item.FindControl("FileUploadArtikull");
if (FileUploadArtikull.HasFile)
{
int filesize = FileUploadArtikull.PostedFile.ContentLength;
if (filesize > 4194304)
{
ScriptManager.RegisterStartupScript(this, this.GetType(), "popup", "alert('Maximumi i madhesise se file qe lejohet eshte 4MB');", true);
}
else
{
string filename = "artikuj/" + Path.GetFileName(FileUploadArtikull.PostedFile.FileName);
//add parameters
command.Parameters.AddWithValue("#filename", filename);
conn.Open();
command.ExecuteNonQuery();
conn.Close();
Bind();
FileUploadArtikull.SaveAs(Server.MapPath("~/artikuj\\" + FileUploadArtikull.FileName));
Response.Redirect("dashboard.aspx");
}
}
else
{
ScriptManager.RegisterStartupScript(this, this.GetType(), "popup", "alert('Ju nuk keni ngarkuar asnje artikull');", true);
}
}
}
AddArtikull.aspx
<%# Page Language="C#" AutoEventWireup="true" CodeFile="AddArtikull.aspx.cs" Inherits="AddArticle" MasterPageFile="~/MasterPage2.master" %>
<asp:Content ID="content2" ContentPlaceholderID=ContentPlaceHolder2 runat="server">
<asp:DataList ID="datalist2" runat="server"
onitemcommand="datalist2_ItemCommand" >
<FooterTemplate>
<section id="main" class="column" runat="server" style="width:900px;">
<article class="module width_full" style="width:900px;">
<header><h3 style="text-align: center">Shto Artikull </h3></header>
<div id="Div1" class="module_content" runat="server">
<asp:Label ID="Label1" runat="server" style="font-weight: 700">Tema</asp:Label>
<fieldset>
<asp:TextBox ID="txtTema" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidatorTema" runat="server"
ControlToValidate="txtTema" Display="Dynamic"
ErrorMessage="Kjo fushe eshte e nevojshme" style="color: #CC0000"></asp:RequiredFieldValidator>
</fieldset><br />
<asp:Label ID="Label6" runat="server" style="font-weight: 700">Abstrakti</asp:Label>
<fieldset>
<asp:TextBox ID="txtAbstrakti" style="height:250px;" Textmode="Multiline" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidatorAbstrakti" runat="server"
ControlToValidate="txtAbstrakti" ErrorMessage="Kjo fushe eshte e nevojshme"
style="color: #CC0000"></asp:RequiredFieldValidator>
</fieldset>
<asp:Label ID="lblData" runat="server" style="font-weight: 700">Data e Publikimit</asp:Label>
<fieldset>
<asp:TextBox ID="txtData" runat="server"></asp:TextBox>
</fieldset>
<asp:Label ID="lblKeywords" runat="server" style="font-weight: 700">Keywords</asp:Label>
<fieldset>
<asp:TextBox ID="txtKeywords" runat="server"></asp:TextBox>
</fieldset>
<br />
<asp:Label ID="Label5" runat="server" style="font-weight: 700">Kategoria</asp:Label>
<div>
<asp:DropDownList ID="drpdKategoria" runat="server" AutoPostBack="false"></asp:DropDownList>
<asp:Button ID="Button1" runat="server" Text="Insert"
/>
</div><br />
<strong>Ngarko Artikull</strong><br />
<asp:FileUpload ID="FileUploadArtikull" runat="server" /><br />
<br />
<asp:Button ID="btnInsert" runat="server" CommandName="Insert" Text="Shto" />
</div>
</article>
</section>
</FooterTemplate>
</asp:DataList>
</asp:Content>
It shows this error:
Compiler Error Message: CS0103: The name 'e' does not exist in the
current context
In this line:
DropDownList drpdKategoria = e.Item.FindControl("drpdKategoria") as DropDownList;
In your bind method you are calling an object e that doesn't exist. If the dropdownlist isn't inside a bound element, you can just reference the front code directly, e.g.
drpdKategoria.DataSource = ds;
drpdKategoria.DataValueField = "id"; // Value of bided list in your dropdown in your case it will be CATEGORY_ID
drpdKategoria.DataTextField = "emertimi"; // this will show Category name in your dropdown
drpdKategoria.DataBind();
without finding the control as long as it is runat="server"
UPDATE
Okay, so you need to add an OnItemCreated event in your datalist
OnItemCreated="datalist2_OnItemCreated"
Then in that method you need this
protected void datalist2_OnItemCreated(object sender, DataListItemEventArgs e)
{
if (e.Item.ItemType == ListItemType.Footer)
{
DropDownList drpdKategoria = e.Item.FindControl("drpdKategoria") as DropDownList;
SqlConnection con = new SqlConnection(connection)
string Qry = "select * from kategoria";
SqlDataAdapter da = new SqlDataAdapter(Qry, con);
DataSet ds = new DataSet();
con.Open();
da.Fill(ds);
drpdKategoria.DataSource = ds;
drpdKategoria.DataValueField = "id";
drpdKategoria.DataTextField = "emertimi";
drpdKategoria.DataBind();
con.Close();
con.Dispose();
ds.Dispose();
da.Dispose();
}
}
That will work for if you only have the footer, if you add an itemtemplate then you just need to get rid of the check for the footer and on each item creation grab that dropdownlist for that item
I have GridView and inside the gridview i have a hyperlink in witch i am trying to pass a query-string into another page. The ID is an INT type but not sure why i am getting this error:
Conversion failed when converting the varchar value '{0}' to data type
int
When i load the detail page by itself without using the hyperlink, it works for me but when i click the hyperlink then i get this error that i mentioned above. Here is my hyper link code:
<asp:TemplateField>
<ItemTemplate>
<asp:HyperLink ID="HyperLink2" Text="VIEW DETAIL" runat="server" NavigateUrl= "~/DET/MARKETING.aspx?ID={0}" Target="_blank">HyperLink</asp:HyperLink>
</ItemTemplate>
</asp:TemplateField>
Here is the code for the detail page:
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
string QUEST_SK = Request.QueryString["QUEST_SK"].ToString();
// string MPost_ID = "773";
sqlcon.Open();
sqlcmd = new SqlCommand("SELECT ID, DESC FROM Table1 WHERE ID= '" + ID+ "' ", sqlcon);
da = new SqlDataAdapter(sqlcmd);
da.Fill(dt);
sqlcon.Close();
GridView1.DataSource = dt;
GridView1.DataBind();
sqlcon.Close();
}
}
The Problem in your SQL Statement
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
string QUEST_SK = Request.QueryString["QUEST_SK"].ToString();
// string MPost_ID = "773";
sqlcon.Open();
sqlcmd = new SqlCommand("SELECT ID, DESC FROM Table1 WHERE ID= " + ID, sqlcon);
da = new SqlDataAdapter(sqlcmd);
da.Fill(dt);
sqlcon.Close();
GridView1.DataSource = dt;
GridView1.DataBind();
sqlcon.Close();
}
}
You Can use Eval
like
<asp:TemplateField>
<ItemTemplate>
<asp:HyperLink ID="HyperLink2" Text="VIEW DETAIL" runat="server" NavigateUrl= '<%# Eval("id","~/DET/MARKETING.aspx?ID={0}") %>' Target="_blank">HyperLink</asp:HyperLink>
</ItemTemplate>
</asp:TemplateField>
or
<asp:TemplateField>
<ItemTemplate>
<asp:HyperLink ID="HyperLink2" Text="VIEW DETAIL" runat="server" NavigateUrl= '~/DET/MARKETING.aspx?ID=<%# Eval("ID") %>' Target="_blank">HyperLink</asp:HyperLink>
</ItemTemplate>
</asp:TemplateField>
I am trying to place an asp gridview inside an asp datalist. For each item in the datalist I would like certain values from another database table to be returned.
I have written the following code, but the gridview returns not data (I can confirm there is records in the database and the stored procedure is correct). The asp datalist is working fine.
What am I doing wrong that is not populating the gridview?
<asp:DataList runat="server" id="listResponses" DataKeyField="QuestionID" CssClass="confirm" OnItemDataBound="listResponses_ItemDataBound">
<ItemTemplate>
<h3 class="confirm new">Question <asp:Label ID="lblaOrder" runat="server" Text='<%# Container.ItemIndex + 1 %>'></asp:Label></h3>
<div class="confirm_question">
<asp:Label ID="lblOrder" runat="server" Text='<%# Container.ItemIndex + 1 %>'></asp:Label>
<p class="confirm"><%# DataBinder.Eval(Container.DataItem, "QuestionText") %></p>
</div> <!-- end confirm_question -->
<asp:GridView runat="server" ID="gridResponses" DataKeyNames="QuestionID"">
<Columns>
<asp:BoundField DataField="AnswerTitle" HeaderText="ID" HeaderStyle-Width="80px" ItemStyle-CssClass="bo"></asp:BoundField>
<asp:BoundField DataField="Responses" HeaderText="Response Count" HeaderStyle-Width="150px" />
</Columns>
</asp:GridView>
</ItemTemplate>
</asp:DataList>
And here is the code behind.
public partial class questionnaire_responses : System.Web.UI.Page
{
OsqarSQL GetData;
DataTable DT;
private string _productConnectionString;
private SqlConnection _productConn;
protected void Page_Load(object sender, EventArgs e)
{
string questionnaireId = Session["qID"].ToString();
int qid = Convert.ToInt32(questionnaireId);
GetData = new OsqarSQL();
string name = GetData.GetQuestionnaireName(qid);
lblQuestionnaireName.Text = name;
if (!IsPostBack)
{
DT = GetData.GetQuestionNameDataList(qid);
listResponses.DataSource = DT;
listResponses.DataBind();
}
}
private void BindGrid(GridView GridView, int questionId)
{
DataTable dt = new DataTable();
GetData.GetAnswerTitle(questionId);
GridView.DataSource = dt;
GridView.DataBind();
}
protected void listResponses_ItemDataBound(object sender, DataListItemEventArgs e)
{
GridView gridResponses=(GridView)e.Item.FindControl("gridResponses");
BindGrid(gridResponses, (int)listResponses.DataKeys[e.Item.ItemIndex]);
}
}
//Method from the data access class
public DataTable GetAnswerTitle(int QuestionId)
{
string returnValue = string.Empty;
SqlCommand myCommand = new SqlCommand("GetAnswer", _productConn);
myCommand.CommandType = CommandType.StoredProcedure;
,yCommand.Parameters.Add(new SqlParameter("#QUESTION_ID", SqlDbType.Int));
myCommand.Parameters[0].Value = QuestionId;
return createDataTable(getData(myCommand));
}
You've created an empty DataTable as DataSource for your GridView.
Replace
DataTable dt = new DataTable();
GetData.GetAnswerTitle(questionId);
GridView.DataSource = dt;
with this
DataTable dt = GetData.GetAnswerTitle(questionId);
GridView.DataSource = dt;