I have a dropdown list with checkbox in the page and when I select multiple options and search its not returning all the selected values in the grid. It returns only one selected value. Here is the code I use it for search. Any suggestions or change in the code. I have binded one gridview column to that checkbox. Checkbox is present outside the gridview. Any suggestions or change in the code?
<asp:CheckBoxList ID="cblGroup" Style="vertical-align: baseline" runat="server" CssClass="chkbox">
</asp:CheckBoxList>
Below is the code on button search I am trying to fetch the checkbox values
protected void btnSearchGroup_Click(object sender, ImageClickEventArgs e)
{
SqlConnection con = new SqlConnection(strcon);
SqlCommand cmd = new SqlCommand("select * from AppInvent_Test where Designation= '" + cblGroup.SelectedValue + "'", con);
SqlDataAdapter Adpt = new SqlDataAdapter(cmd);
DataTable dt = new DataTable();
Adpt.Fill(dt);
GridView1.DataSource = dt;
GridView1.DataBind();
}
OK as mentioned by Sudhakar, Try this
protected void btnSearchGroup_Click(object sender, EventArgs e)
{
string selectedValues = string.Empty;
foreach (ListItem item in cblGroup.Items)
{
if (item.Selected)
selectedValues += "'" + item.Value + "',";
}
if (selectedValues != string.Empty)
selectedValues = selectedValues.Remove(selectedValues.Length - 1);//To remove the last comma;
SqlConnection con = new SqlConnection(strcon);
SqlCommand cmd = new SqlCommand("select * from AppInvent_Test where Designation in (" + selectedValues + ")", con);
SqlDataAdapter Adpt = new SqlDataAdapter(cmd);
DataTable dt = new DataTable();
Adpt.Fill(dt);
GridView1.DataSource = dt;
GridView1.DataBind();
}
Related
Good day.
I just looking for a solution to my problem. I just trying to make my first program and I have encountered this problem. I have 2 comboboxes, the first one is the list of supplier and the second one is the list of items. Now I need to filter down what will show in the 2nd combobox based on the 1st combobox, but still in the 2nd combobox. It always shows all the item that is listed from my database. All data are coming from SQL Database and below is the code that I am working with:
private void comboBox3_SelectedIndexChanged(object sender, EventArgs e)
{
conn.Open();
SqlCommand cmd = conn.CreateCommand();
cmd.CommandType = CommandType.Text;
cmd.CommandText = "select * from tblmaster where Supplier = '" + comboBox3.SelectedItem.ToString() + "'";
cmd.ExecuteNonQuery();
DataTable dt = new DataTable();
SqlDataAdapter Da = new SqlDataAdapter(cmd);
Da.Fill(dt);
foreach(DataRow dr in dt.Rows) {
comboBox5.Items.Add(dr["ProductCode"].ToString());
}
conn.Close();
}
Try to clear the items before the loop.
private void comboBox3_SelectedIndexChanged(object sender, EventArgs e)
{
conn.Open();
SqlCommand cmd = conn.CreateCommand();
cmd.CommandType = CommandType.Text;
cmd.CommandText = "select * from tblmaster where Supplier = '" + comboBox3.SelectedItem.ToString() + "'";
cmd.ExecuteNonQuery();
DataTable dt = new DataTable();
SqlDataAdapter Da = new SqlDataAdapter(cmd);
Da.Fill(dt);
comboBox5.Items.Clear();
foreach(DataRow dr in dt.Rows) {
comboBox5.Items.Add(dr["ProductCode"].ToString());
}
conn.Close();
}
I am having a grid grouping control in syncfusion asp.net with first column cell type as combobox.here I need to fill the dropdownlist in pageload.I wrote the below code:
Sqlcommand cmd = new SqlCommand("Select item_Id, item_Name from productsnrwmtrls where item_Ctgry in('R','B')", con);
sqldataadapter da = new SqlDataAdapter(cmd);
Datatable dtLocl = new DataTable();
da.Fill(dtLocl);
DropDownList ddlrwmtrl1 = (DropDownList)GridGroupingControl1.FindControl("ddlrwmtrl");
ddlrwmtrl1.DataTextField = "item_Name";
ddlrwmtrl1.DataValueField = "item_Id";
ddlrwmtrl1.DataSource = dtLocl;
ddlrwmtrl1.DataBind();
But at this line ddlrwmtrl1.DataTextField = "item_Name"; it is showing error : Object Reference is not set to an instance of an object.
You can fill the dropdownlist in Syncfusion GridGroupingControl by using Rowdatabound.
Add the dropdown as an Item Template in ASPX file:
[**aspx**]
<syncfusion:GridColumnDescriptor MappingName="City" HeaderText="City">
<ItemTemplate>
<asp:DropDownList ID="ddlCity" runat="server"></asp:DropDownList>
</ItemTemplate>
</syncfusion:GridColumnDescriptor>
RowDataBound Event
**[cs]**
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
GetData();
this.GridGroupingControl1.RowDataBound += GridGroupingControl1_RowDataBound;
}
protected void GridGroupingControl1_RowDataBound(object sender,RowDataBoundEventArgs e)
{
if (e.Element.Kind == DisplayElementKind.Record)
{
for (int i = 0; i < e.Row.Cells.Count; i++)
{
if (((GridCell)e.Row.Cells[i]).ColumnDescriptor.Name == "City")
{
myConnection = new SqlConnection(ConnectionString);
myConnection.Open();
DropDownList ddl = (DropDownList)e.Row.Cells[i].FindControl("ddlCity");
SqlCommand cmd = new SqlCommand("SELECT Distinct City FROM Employees",
myConnection);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);
myConnection.Close();
ddl.DataSource = ds;
ddl.DataTextField = "City";
ddl.DataValueField = "City";
ddl.DataBind();
ddl.Items.Insert(0, new ListItem("--Select--", "0"));
}
}
}
}
You will get the grid with dropdown like below
As title said it all anyway I have a table is sql-server products.
Which has product id, name,price and cetegory.
what i did is i get data into 1st GridView category wise, and what i want is when i checked that particular row or multiple row and click select button it shuld show product name and price in 2nd gridview.
But what its do is it override the next selected item to previously selected item in 2nd gridview and shows onlu one row not multiple selected items.
can anybody help me ??
here is a code
protected void Button1_Click(object sender, EventArgs e)
{
for (int i = 0; i < GridView1.Rows.Count; i++)
{
CheckBox chbox = GridView1.Rows[i].Cells[0].FindControl("CheckBox1") as CheckBox;
if (chbox.Checked == true)
{
string conn = ConfigurationManager.ConnectionStrings["Test_T3ConnectionString2"].ConnectionString;
SqlConnection con = new SqlConnection(conn);
string query = "select prod_name,price from products where prod_id = '" + GridView1.Rows[i].Cells[1].Text + "'";
SqlCommand cmd = new SqlCommand(query, con);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataTable dt = new DataTable();
da.Fill(dt);
GridView2.DataSource = dt;
GridView2.DataBind();
}
}
}
You binded the grid too many times.
protected void Button1_Click(object sender, EventArgs e) {
List<string> checkedIDs = new List<string>();
for (int i = 0; i < GridView1.Rows.Count; i++) {
CheckBox chbox = GridView1.Rows[i].Cells[0].FindControl("CheckBox1") as CheckBox;
if (chbox.Checked == true)
{
checkedIDs.Add("'" + GridView1.Rows[i].Cells[1].Text + "'");
}
}
string conn = ConfigurationManager.ConnectionStrings["Test_T3ConnectionString2"].ConnectionString;
SqlConnection con = new SqlConnection(conn);
string query = "select prod_name,price from products where prod_id in (" + string.Join(",", checkedIDs.ToArray()) + ")";
SqlCommand cmd = new SqlCommand(query, con);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataTable dt = new DataTable();
da.Fill(dt);
GridView2.DataSource = dt;
GridView2.DataBind();
}
I'm new to c#, as in.
I'm currently working on a search function in c# using 3 DropDownLists and a submit button. When a user select an item on DropDownList and click submit, it will print the table for the respective selection.
There are 3 DropDownLists:
a province,
city,
specialization.
This will search the available doctors that suits the selection. For example I choose province1 on 1st DropDownList, city1 on the 2nd and a psychologist on 3rd, when the submit button is fired, it will print the available doctors that is in province1, city1 and has a specialization of psychologist.
I already have a code, still figuring it out but, when i click the submit button, nothing is happening. Can someone help me?
Here's what I've done so far:
public partial class Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
System.Threading.Thread.Sleep(1000);
if (!IsPostBack)
{
string constring = ConfigurationManager.ConnectionStrings["AccreString"].ConnectionString;
SqlConnection conn = new SqlConnection(constring);
DataTable dt = new DataTable("emed_province");
using (conn)
{
conn.Open();
SqlCommand comm = new SqlCommand("SELECT * FROM emed_province ORDER BY PROVINCE_NAME ASC", conn);
SqlDataAdapter adptr = new SqlDataAdapter(comm);
adptr.Fill(dt);
}
ddlProvince.DataSource = dt;
ddlProvince.DataTextField = "PROVINCE_NAME";
ddlProvince.DataValueField = "PROVINCE_CODE";
ddlProvince.DataBind();
ddlProvince.Items.Insert(0, new ListItem("---------------SELECT---------------", "0"));
ddlCity.Items.Insert(0, new ListItem("---------------SELECT---------------", "0"));
ddlSpec.Items.Insert(0, new ListItem("---------------SELECT---------------", "0"));
}
}
protected void ddlProvince_SelectedIndexChanged(object sender, EventArgs e)
{
System.Threading.Thread.Sleep(1000);
string constring = ConfigurationManager.ConnectionStrings["AccreString"].ConnectionString;
SqlConnection conn = new SqlConnection(constring);
DataTable dt = new DataTable("emed_province");
using (conn)
{
conn.Open();
SqlCommand comm = new SqlCommand("SELECT * FROM emed_city WHERE PROVINCE_CODE =#pcode", conn);
comm.Parameters.AddWithValue("#pcode", ddlProvince.SelectedValue);
SqlDataAdapter adptr = new SqlDataAdapter(comm);
adptr.Fill(dt);
SqlParameter param = new SqlParameter();
param.ParameterName = "#pcode";
param.Value = ddlProvince;
comm.Parameters.Add(param);
}
ddlCity.DataSource = dt;
ddlCity.DataTextField = "CITY_NAME";
ddlCity.DataValueField = "CITY_CODE";
ddlCity.DataBind();
ddlCity.Items.Insert(0, new ListItem("---------------SELECT---------------", "0"));
}
protected void ddlCity_SelectedIndexChanged(object sender, EventArgs e)
{
System.Threading.Thread.Sleep(1000);
string constring = ConfigurationManager.ConnectionStrings["AccreString"].ConnectionString;
SqlConnection conn = new SqlConnection(constring);
DataTable dt = new DataTable("emed_city");
using (conn)
{
conn.Open();
SqlCommand comm = new SqlCommand("SELECT * FROM emed_specialization", conn);
comm.Parameters.AddWithValue("#ccode", ddlCity.SelectedValue);
SqlDataAdapter adptr = new SqlDataAdapter(comm);
adptr.Fill(dt);
SqlParameter param = new SqlParameter();
param.ParameterName = "#ccode";
param.Value = ddlCity;
comm.Parameters.Add(param);
}
ddlSpec.DataSource = dt;
ddlSpec.DataTextField = "SPEC_NAME";
ddlSpec.DataValueField = "SPEC_CODE";
ddlSpec.DataBind();
ddlSpec.Items.Insert(0, new ListItem("---------------SELECT---------------", "0"));
}
protected void btnSub_Click(object sender, EventArgs e)
{
string constring = ConfigurationManager.ConnectionStrings["AccreString"].ConnectionString;
SqlConnection conn = new SqlConnection(constring);
DataTable dt = new DataTable("emed_doctors");
using (conn)
{
conn.Open();
SqlCommand comm = new SqlCommand("SELECT DOCTOR_NAME FROM emed_doctors where Province = '" + ddlProvince.SelectedItem.ToString() + "'", conn);
SqlDataAdapter adptr = new SqlDataAdapter(comm);
adptr.Fill(dt);
}
}
}
Make change in this line of code which is in submit button click function
Correct code:
SqlCommand comm = new SqlCommand("SELECT DOCTOR_NAME FROM emed_doctors where province = '" + ddlProvince.SelectedItem.ToString() + "'", conn);
because as you see your code query is incorrent have look to your code which is incorrect
Wrong code:
SqlCommand comm = new SqlCommand("SELECT DOCTOR_NAME FROM emed_doctors where (" + ddlProvince.SelectedItem.ToString() + " ", conn);
Edit:
if you want to display record that you got in DataTable you either need loop through the records or you need to use GridView for that...i think you miss that thing
in above one after where clause you miss the name of the filed you need to made filter on... i have written update code by modifying that condition.
See MSDN for GridView.
You said that after clicking submit, nothing happend. But in btnSub_Click I didn't see anything that displaying the result or changing anything on the page. You should bind dt to some control like a gridview etc.
I'm having a problem with a couple of gridviews that are filled from the code behind.
When I fill and databind GridView1 on it's own it works fine.
I then added the code to fill and bind GridView2 which displays but GridView1 dissapears completely.
If I comment out GridView2.DataBind() then GridView1 then appears again.
I can't work out what is going on.
Incidentaly if I change GridView2 for a DropDownList or a CheckBoxList then the same problem occurs, but if I change it for a ListBox then GridView1 appears.
protected void Page_Load(object sender, EventArgs e)
{
Int32 chaID = 20;
Int32 slots = 14;
String ConnectionString = WebConfigurationManager.ConnectionStrings["horizonConnectionString"].ToString();
String selectSQL = "SELECT chassis.ChassisName, srv.ChassisPosition, srv.ServerName, srv.ChassisID, srv.LocationID, chassis.LocationID AS ChaLocationID FROM srv INNER JOIN chassis ON srv.ChassisID = chassis.ChassisID WHERE (srv.ChassisID = '" + chaID + "') ORDER BY chassis.ChassisName, srv.ChassisPosition";
SqlConnection con = new SqlConnection(ConnectionString);
SqlCommand cmd = new SqlCommand(selectSQL, con);
DataTable dt2 = new DataTable();
DataView dv = new DataView();
try
{
con.Open();
SqlDataAdapter sda = new SqlDataAdapter(selectSQL, con);
sda.Fill(dt2);
dv = dt2.DefaultView;
}
catch (Exception)
{
}
try
{
int searchIndex;
dv.Sort = "ChassisPosition";
DataTable dt = new DataTable();
dt.Columns.Add(new DataColumn("Bay", typeof(Int32)));
dt.Columns.Add(new DataColumn("Server", typeof(String)));
for (int i = 0; i <= slots - 1; i++)
{
DataRow dr = dt.NewRow();
dr[0] = i + 1;
searchIndex = dv.Find(i + 1);
if (searchIndex != -1)
{
dr[1] = dv[searchIndex][2].ToString();
}
else
{
dr[1] = "-----";
}
dt.Rows.Add(dr);
}
this.GridView1.DataSource = dt;
GridView1.DataBind();
}
catch (Exception)
{
}
ConnectionString = WebConfigurationManager.ConnectionStrings["horizonConnectionString"].ToString();
selectSQL = "SELECT [ServerName], [ServerID], [FarmName], [LMG] FROM [srv] ORDER BY [ServerName]";
con = new SqlConnection(ConnectionString);
cmd = new SqlCommand(selectSQL, con);
DataTable dt3 = new DataTable();
try
{
con.Open();
SqlDataAdapter sda = new SqlDataAdapter(selectSQL, con);
sda.Fill(dt3);
this.GridView2.DataSource = dt3;
GridView2.DataBind();
}
catch (Exception)
{
}
}
you are using the same instance of SqlDataAdapter for two connections at the same time.
SqlConnection con = new SqlConnection(ConnectionString);
SqlCommand cmd = new SqlCommand(selectSQL, con);
the SqlDataAdapter object has been named "sda" twice in "page_load" method.
SqlDataAdapter sda = new SqlDataAdapter(selectSQL, con);
SqlDataAdapter "sda" is already binding to GridView1. this data binding will be lost if U change or re-assign this object.