Develop Reference

How to get previous value before editing from grid view text box in asp.net

I'm applying edit functionality on grid view with object data source.I want to take previous value when i click edit button that's need for another purpose here i'm trying to write code but it gives current value.how to get previous value.......hope you can help me
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
GridViewRow row = (GridView1.Rows[e.RowIndex] as GridViewRow);
string totalQuantity = (row.Cells[5].Controls[0] as TextBox).Text;//It gives current value but i want previous value
string totalPurchasePrice = (row.Cells[6].Controls[0] as TextBox).Text; //It gives current value but i want previous value
GridView1.EditIndex = -1;
//value store in session start
Session["totalQuantity"] = totalQuantity;
Session["totalPurchasePrice"] = totalPurchasePrice;
//value store in session end
}
and grid view code
<asp:GridView ID="GridView1" runat="server" CssClass="dataGridTable" AutoGenerateColumns="False" Width="100%" AllowPaging="True" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" CellPadding="3" DataSourceID="ObjectDataSource1" HeaderStyle-Height="30" OnRowCreated="GridView1_RowCreated" PageSize="30" DataKeyNames="invoiceNumber,productName,productCategory" OnSelectedIndexChanged="GridView1_SelectedIndexChanged" OnRowUpdating="GridView1_RowUpdating">
<Columns>
<asp:CommandField ShowEditButton="true" ShowSelectButton="True" />
<asp:CommandField ShowDeleteButton="true"/>
<asp:BoundField DataField="invoiceNumber" HeaderText="Invoice" ReadOnly="true" SortExpression="invoiceNumber" />
<asp:BoundField DataField="productName" HeaderText="Name" ReadOnly="true" SortExpression="productName" />
<asp:BoundField DataField="productCategory" HeaderText="Category" ReadOnly="true" SortExpression="productCategory" />
<asp:BoundField DataField="totalQuantity" HeaderText="Quantity" SortExpression="totalQuantity" />
<asp:BoundField DataField="totalPurchasePrice" HeaderText="Total Price" SortExpression="totalPurchasePrice" />
<asp:BoundField DataField="salePricePerItem" HeaderText="Sale Price/Item" SortExpression="salePricePerItem" />
<asp:BoundField DataField="comments" HeaderText="Comments" SortExpression="comments" />
<asp:BoundField DataField="date" HeaderText="Date" ReadOnly="true" SortExpression="date" />
<asp:TemplateField>
<ItemTemplate>
<asp:ImageButton ID="ImageButton1" runat="server" Height="24px" ImageUrl="~/Images/detailsInfo.png" Width="24px" OnClick="ImageButton1_Click" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
<FooterStyle BackColor="White" ForeColor="#000066" />
<HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" CssClass="gridHeaderAlignment" />
<PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
<RowStyle ForeColor="#000066" HorizontalAlign="Center" VerticalAlign="Middle" />
<HeaderStyle HorizontalAlign="Center" VerticalAlign="Middle" />
<SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
<SortedAscendingCellStyle BackColor="#F1F1F1" />
<SortedAscendingHeaderStyle BackColor="#007DBB" />
<SortedDescendingCellStyle BackColor="#CAC9C9" />
<SortedDescendingHeaderStyle BackColor="#00547E" />
</asp:GridView>

How to Bind Selected Rows From Grid View to Another Grid View

I would to add the selected rows from gridview into another gridview. Could someone help me on this? When I try to bind gridview to another gridview, another gridview doesn't appear.
The aspx file I posted below is about how I created the gridview. The gridview1 will get its gridview contents from the database table. While the cs file is about how I am going to bind selected rows from gridview1 into gridview2. The problem now is when I try to bind the rows over, the gridview2 didn't appear, only gridview1 appeared.
This is my codes:
ASPX file:
<h3 class="h3">Grid View1</h3>
<div style="width: 100%; height: 400px; overflow: auto">
<asp:GridView ID="GridView1"
runat="server"
AllowSorting="True"
AutoGenerateColumns="False"
Width="100%"
CellPadding="6"
ForeColor="#333333"
GridLines="Horizontal"
BorderColor="Black"
BorderStyle="Solid"
BorderWidth="2px"
EmptyDataText="Record Not Found"
OnRowDataBound="GridView1_OnRowDataBound">
<AlternatingRowStyle BackColor="White" />
<Columns>
<asp:BoundField DataField="DATE"
HeaderText="DATE"></asp:BoundField>
<asp:BoundField DataField="CODE"
HeaderText="CODE"></asp:BoundField>
<asp:BoundField DataField="PROFILE_NAME"
HeaderText="PROFILE_NAME"></asp:BoundField>
<asp:BoundField DataField="DESCRIPTION"
HeaderText="DESCRIPTION"></asp:BoundField>
<asp:BoundField DataField="STATUS"
HeaderText="STATUS"></asp:BoundField>
<asp:BoundField DataField="USER"
HeaderText="USER"></asp:BoundField>
<asp:BoundField DataField="SUB_USER"
HeaderText="SUB_USER"></asp:BoundField>
<asp:BoundField DataField="SCORE"
HeaderText="SCORE"></asp:BoundField>
<asp:BoundField DataField="ROLE"
HeaderText="ROLE"></asp:BoundField>
<asp:BoundField DataField="QUANTITY"
HeaderText="QUANTITY"></asp:BoundField>
<asp:BoundField DataField="ITEM"
HeaderText="ITEM"></asp:BoundField>
<asp:BoundField DataField="PRICE"
HeaderText="PRICE"></asp:BoundField>
</Columns>
<EditRowStyle BackColor="#2461BF" />
<FooterStyle BackColor="#507CD1"
Font-Bold="False"
ForeColor="Black" />
<HeaderStyle BackColor="#507CD1"
Font-Bold="False"
ForeColor="Black"
BorderStyle="Solid"
BorderWidth="2px" />
<PagerStyle BackColor="#2461BF"
ForeColor="White"
HorizontalAlign="Center" />
<RowStyle BackColor="#EFF3FB" />
<SelectedRowStyle BackColor="#D1DDF1"
Font-Bold="False"
ForeColor="#333333" />
<SortedAscendingCellStyle BackColor="#F5F7FB" />
<SortedAscendingHeaderStyle BackColor="#6D95E1" />
<SortedDescendingCellStyle BackColor="#E9EBEF" />
<SortedDescendingHeaderStyle BackColor="#4870BE" />
</asp:GridView>
<h3 class="h3">Grid View2</h3>
<div style="width: 100%; height: 400px; overflow: auto">
<asp:GridView ID="GridView2"
runat="server"
AllowSorting="True"
AutoGenerateColumns="False"
Width="100%"
CellPadding="6"
ForeColor="#333333"
GridLines="Horizontal"
BorderColor="Black"
BorderStyle="Solid"
BorderWidth="2px"
EmptyDataText="Record Not Found"
OnRowDataBound="GridView2_OnRowDataBound">
<AlternatingRowStyle BackColor="White" />
<Columns>
<asp:BoundField DataField="DATE"
HeaderText="DATE"></asp:BoundField>
<asp:BoundField DataField="CODE"
HeaderText="CODE"></asp:BoundField>
<asp:BoundField DataField="PROFILE_NAME"
HeaderText="PROFILE_NAME"></asp:BoundField>
<asp:BoundField DataField="DESCRIPTION"
HeaderText="DESCRIPTION"></asp:BoundField>
<asp:BoundField DataField="STATUS"
HeaderText="STATUS"></asp:BoundField>
<asp:BoundField DataField="USER"
HeaderText="USER"></asp:BoundField>
<asp:BoundField DataField="SUB_USER"
HeaderText="SUB_USER"></asp:BoundField>
<asp:BoundField DataField="SCORE"
HeaderText="SCORE"></asp:BoundField>
<asp:BoundField DataField="ROLE"
HeaderText="ROLE"></asp:BoundField>
<asp:BoundField DataField="QUANTITY"
HeaderText="QUANTITY"></asp:BoundField>
<asp:BoundField DataField="ITEM"
HeaderText="ITEM"></asp:BoundField>
<asp:BoundField DataField="PRICE"
HeaderText="PRICE"></asp:BoundField>
</Columns>
<EditRowStyle BackColor="#2461BF" />
<FooterStyle BackColor="#507CD1"
Font-Bold="False"
ForeColor="Black" />
<HeaderStyle BackColor="#507CD1"
Font-Bold="False"
ForeColor="Black"
BorderStyle="Solid"
BorderWidth="2px" />
<PagerStyle BackColor="#2461BF"
ForeColor="White"
HorizontalAlign="Center" />
<RowStyle BackColor="#EFF3FB" />
<SelectedRowStyle BackColor="#D1DDF1"
Font-Bold="False"
ForeColor="#333333" />
<SortedAscendingCellStyle BackColor="#F5F7FB" />
<SortedAscendingHeaderStyle BackColor="#6D95E1" />
<SortedDescendingCellStyle BackColor="#E9EBEF" />
<SortedDescendingHeaderStyle BackColor="#4870BE" />
</asp:GridView>
CS file:
protected void GridView1_OnRowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
if (Convert.ToString(DataBinder.Eval(e.Row.DataItem, “USER”)) == “ALAN TAN”)
{
DataTable dt = new DataTable();
dt.Columns.Add(“DATE”);
dt.Columns.Add(“CODE”);
dt.Columns.Add(“PROFILE_NAME”);
dt.Columns.Add(“DESCRIPTION”);
dt.Columns.Add(“STATUS”);
dt.Columns.Add(“USER”);
dt.Columns.Add(“SUB_USER”);
dt.Columns.Add(“SCORE”);
dt.Columns.Add(“ROLE”);
dt.Columns.Add(“QUANTITY”);
dt.Columns.Add(“ITEM”);
dt.Columns.Add(“PRICE”);
DataRow dataRow;
dataRow = dt.NewRow();
int i2 = 1;
for(int i=0; i<dataRow.Table.Columns.Count; i++)
{
dataRow[i] = GridView1.SelectedRow.Cells[i2].Text;
i2++;
}
dt.Rows.Add(dataRow);
GridView2.DataSource = dt;
GridView2.DataBind();
}
}
}
Any help is greatly appreciated. Thanks!

I Really didn't understand messy code done by you (Too many things are missing in your question). Refer below links that will explain you will example.
http://www.aspsnippets.com/Articles/Transfer-Selected-Rows-from-one-GridView-to-Another-in-Asp.net.aspx
http://www.ittutorials.in/source/aspDotnet/scf13/move-gridview-rows-from-one-gridview-to-another.aspx
Updates:
dt.Rows.Add() must be inside of for loop so everytime it will get add new row.
try to update following code in cs file
for(int i=0; i<dataRow.Table.Columns.Count; i++)
{
dt.Rows.Add(GridView1.SelectedRow.Cells[i2].Text);
i2++;
}
GridView2.DataSource = dt;
GridView2.DataBind();

gridview disappears after changing the page

I have a gridview that should split into pages but the issue is that when I change the page the whole gridview is disappearing I tried everything I found in the internet but with no solution here is my code
<asp:GridView ID="ExistContents" runat="server" AutoGenerateColumns="False" CellPadding="4" ForeColor="#333333" GridLines="None"
AllowPaging="true" PageSize="5" OnPageIndexChanging="ExistContents_PageIndexChanging" >
<AlternatingRowStyle BackColor="White" ForeColor="#284775" />
<Columns>
<asp:BoundField DataField="ContentID" HeaderText="id" />
<asp:ImageField DataImageUrlField="TmpFilename" HeaderText="Image">
<ControlStyle Height="64px" Width="96px" />
</asp:ImageField>
<asp:BoundField DataField="Name" HeaderText="Name" />
<asp:BoundField DataField="Description" HeaderText="Description" />
<asp:BoundField DataField="Type" HeaderText="Type" />
<asp:BoundField DataField="ContentID" HeaderText="id" Visible="false" ShowHeader="false" />
<asp:TemplateField HeaderText="Delete">
<ItemTemplate>
<asp:UpdatePanel runat="server">
<ContentTemplate>
<asp:CheckBox runat="server" ID="ChBox1" OnCheckedChanged="ExistContents_CheckedChanged" AutoPostBack="True"/>
</ContentTemplate>
</asp:UpdatePanel>
</ItemTemplate>
</asp:TemplateField>
</Columns>
<EditRowStyle BackColor="#999999" />
<FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" CssClass="header"/>
<PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
<RowStyle BackColor="#F7F6F3" ForeColor="#333333" />
<SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
<SortedAscendingCellStyle BackColor="#E9E7E2" />
<SortedAscendingHeaderStyle BackColor="#506C8C" />
<SortedDescendingCellStyle BackColor="#FFFDF8" />
<SortedDescendingHeaderStyle BackColor="#6F8DAE" />
</asp:GridView>
and here is the event handler
protected void ExistContents_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
ExistContents.PageIndex = e.NewPageIndex;
List<CONTENT> panier;
panier = (List<CONTENT>)Session["PANIER"];
ExistContents.DataSource = panier;
ExistContents.DataBind();
}

You should handle the PageIndexChanged event instead.
The pageIndexChanging is made to give you an option to cancel the paging before it's executed.

here is an answer for this probleme, acctually my datasource was not the session but a linq query so i changed it and it works perfectly
and here is my new code
protected void ExistContents_CheckedChanged(object sender, EventArgs e)
{
CheckBox chk = (CheckBox)sender;
GridViewRow gr = (GridViewRow)chk.Parent.Parent.Parent.Parent;
int id= Convert.ToInt32(gr.Cells[0].Text);
if (chk.Checked)
AddToCaddy(id, "DELETE");
else
DeleteFromCaddy(id);
UpdatePanel.DataBind();
UpdatePanel.Update();
}
just for information if you are making a databind to your gridview in the Page_Load inside the if (!IsPostBack) then you will need to redefind the dataSource but if you'r not then you only need to use these functions
UpdatePanel.DataBind();
UpdatePanel.Update();
i hope this helps

Getting selectedrow in RowCommand

i have a gridview as:
<asp:GridView ID="gdvOpinions" runat="server" Width="100%" CellPadding="4"
ForeColor="#333333" GridLines="None" Height="100px" Visible="False"
AutoGenerateColumns="False" onrowcommand="gdvOpinions_RowCommand" >
<AlternatingRowStyle BackColor="White" ForeColor="#284775" />
<Columns>
<asp:ButtonField ButtonType="Button" CommandName="Confirm" Text="تائید" />
<asp:ButtonField ButtonType="Button" CommandName="Delete" Text="حذف" />
<asp:BoundField DataField="ID" HeaderText="ID" />
<asp:BoundField DataField="مقاله" HeaderText="مقاله" >
<ControlStyle Width="150px" />
</asp:BoundField>
<asp:BoundField DataField="نظر کاربر" HeaderText="نظر کاربر" >
<ControlStyle Width="250px" />
</asp:BoundField>
</Columns>
<EditRowStyle BackColor="#999999" />
<FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
<RowStyle BackColor="#F7F6F3" ForeColor="#333333" />
<SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
<SortedAscendingCellStyle BackColor="#E9E7E2" />
<SortedAscendingHeaderStyle BackColor="#506C8C" />
<SortedDescendingCellStyle BackColor="#FFFDF8" />
<SortedDescendingHeaderStyle BackColor="#6F8DAE" />
</asp:GridView>
As you see, i have two buttonfield for every row, but when i click one of these buttons and want to get their row in
gdvOpinions_RowCommand
the
gdvOpinions.SelectedRow
returns null;
how should i find which row is selected?

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns = "false"
OnRowCommand = "OnRowCommand">
<Columns>
<asp:ButtonField CommandName = "ButtonField" DataTextField = "CustomerID"
ButtonType = "Button"/>
</Columns>
</asp:GridView>
protected void OnRowCommand(object sender, GridViewCommandEventArgs e)
{
int index = Convert.ToInt32(e.CommandArgument);
GridViewRow gvRow = GridView1.Rows[index];
}

From what I understand out of your question, if you are trying to get the row for which the button was clicked, then in that case this might be the right thing to do :
GridViewRow gRow = (GridViewRow)((Control)e.CommandSource).NamingContainer;
Now here, this is for a control such as a Button or ImageButton. You might have to improvise on this for ButtonField.
You can also change the ButtonField to a simple TemplateField with a Button.
Hope this helps.

Error getting values from row on 'delete' clicked in GridView

I am getting this error while I click on the delete button
System.ArgumentOutOfRangeException:
Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
And the GridView3_RowDeleting is as follows
protected void GridView3_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
Label1.Text = GridView3.DataKeys[e.RowIndex].Value.ToString();
}
How can I access values of that particular row?
<asp:GridView ID="GridView3" runat="server" AllowPaging="True" AllowSorting="True" AutoGenerateColumns="False" CellPadding="4" DataSourceID="SqlDataSource1" ForeColor="#333333" GridLines="None" HorizontalAlign="Left" Width="16px" Height="5px" PageSize="5" OnRowDeleting="GridView3_RowDeleting" OnSelectedIndexChanged="GridView3_SelectedIndexChanged">
<AlternatingRowStyle BackColor="White" />
<Columns>
<asp:BoundField DataField="DName" HeaderText="DName" SortExpression="DName" />
<asp:BoundField DataField="bloodGroup" HeaderText="Group" SortExpression="bloodGroup" />
<asp:BoundField DataField="contact_number" HeaderText="Contact#" SortExpression="contact_number" />
<asp:BoundField DataField="dateDonated" HeaderText="dateDonated" SortExpression="dateDonated" />
<asp:BoundField DataField="city" HeaderText="city" SortExpression="city" />
<asp:BoundField DataField="arid_number" HeaderText="Arid#" SortExpression="arid_number" />
<asp:CommandField ShowDeleteButton="True" />
</Columns>
<FooterStyle BackColor="#990000" Font-Bold="True" ForeColor="White" />
<HeaderStyle BackColor="#990000" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#FFCC66" ForeColor="#333333" HorizontalAlign="Center" />
<RowStyle BackColor="#FFFBD6" ForeColor="#333333" />
<SelectedRowStyle BackColor="#FFCC66" Font-Bold="True" ForeColor="Navy" />
<SortedAscendingCellStyle BackColor="#FDF5AC" />
<SortedAscendingHeaderStyle BackColor="#4D0000" />
<SortedDescendingCellStyle BackColor="#FCF6C0" />
<SortedDescendingHeaderStyle BackColor="#820000" />
</asp:GridView>

you are missing *DataKeyNames * attribute in Gridview.
<asp:GridView DataKeyNames ="yourID"---------------------------------------->
if you use "DName" as your DataKeyNames like <asp:GridView DataKeyNames="DName" then you get column DName value of your deleting row in label
Label1.Text = GridView3.DataKeys[e.RowIndex].Value.ToString();
Label1.Text=(value of DName of your row thats deleting)
Following is a working example: May helpful
<asp:GridView ID="GridView2" runat="server" AutoGenerateColumns="False" DataKeyNames="ProductID"
DataSourceID="SqlDataSource1">
<Columns>
<asp:CommandField ShowDeleteButton="True" />
<asp:BoundField DataField="ProductID" HeaderText="ProductID" ReadOnly="True" SortExpression="ProductID" />
<asp:BoundField DataField="ProductDesc" HeaderText="ProductDesc" SortExpression="ProductDesc" />
</Columns>
</asp:GridView>
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:NorthWindConnectionString %>"
SelectCommand="SELECT [ProductID], [ProductDesc] FROM [Product]"
DeleteCommand="DELETE FROM [Product] WHERE [ProductID] = #ProductID" >
<DeleteParameters>
<asp:Parameter Name="ProductID" Type="Int32" />
</DeleteParameters>
</asp:SqlDataSource>
Here ProductID is uniqueKey using in DataKeyNames and in Deleting a record, while in your case DID...
Following should be your code...Enjoy
<asp:GridView DataKeyNames="DID" ID="GridView3" runat="server" AllowPaging="True" AllowSorting="True" AutoGenerateColumns="False"
CellPadding="4" DataSourceID="SqlDataSource1" ForeColor="#333333" GridLines="None" HorizontalAlign="Left" Width="16px"
Height="5px" PageSize="5" OnRowDeleting="GridView3_RowDeleting" OnSelectedIndexChanged="GridView3_SelectedIndexChanged">
<AlternatingRowStyle BackColor="White" />
<Columns>
<asp:BoundField DataField="DID" HeaderText="DID" SortExpression="DID" Visible="false" />
<asp:BoundField DataField="DName" HeaderText="DName" SortExpression="DName" />
<asp:BoundField DataField="bloodGroup" HeaderText="Group" SortExpression="bloodGroup" />
<asp:BoundField DataField="contact_number" HeaderText="Contact#" SortExpression="contact_number" />
<asp:BoundField DataField="dateDonated" HeaderText="dateDonated" SortExpression="dateDonated" />
<asp:BoundField DataField="city" HeaderText="city" SortExpression="city" />
<asp:BoundField DataField="arid_number" HeaderText="Arid#" SortExpression="arid_number" />
<asp:CommandField ShowDeleteButton="True" />
</Columns>
<FooterStyle BackColor="#990000" Font-Bold="True" ForeColor="White" />
<HeaderStyle BackColor="#990000" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#FFCC66" ForeColor="#333333" HorizontalAlign="Center" />
<RowStyle BackColor="#FFFBD6" ForeColor="#333333" />
<SelectedRowStyle BackColor="#FFCC66" Font-Bold="True" ForeColor="Navy" />
<SortedAscendingCellStyle BackColor="#FDF5AC" />
<SortedAscendingHeaderStyle BackColor="#4D0000" />
<SortedDescendingCellStyle BackColor="#FCF6C0" />
<SortedDescendingHeaderStyle BackColor="#820000" />
</asp:GridView>
<asp:SqlDataSource ID="SqlDataSource2" runat="server" ConnectionString="<%$ ConnectionStrings:TestConnectionString %>"
DeleteCommand="DELETE FROM [tblDonors] WHERE [DID]=#DID"
SelectCommand="SELECT [DName], [gender], [bloodGroup], [contact_number], [city], [arid_number], [avallibilityTime], [dateDonated], [email] FROM [tblDonors]">
<DeleteParameters>
<asp:Parameter Name="DID" Type="Int32" />
</DeleteParameters>
</asp:SqlDataSource>