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datagrid checkbox asp.net c#

datagrid checkbox asp.net c#

datagrid checkbox asp.net c#

(OP)
I am using a datagrid where the first column consists of check boxes and the second column is bound to a database table.

<asp:datagrid>
<Columns>
    <asp:TemplateColumn>
    <ItemTemplate>
         <asp:CheckBox id="chkSelect" runat="server" ></asp:CheckBox>
    </ItemTemplate>
    </asp:TemplateColumn>

    <asp:BoundColumn DataField="name" HeaderText="Name"></asp:BoundColumn>
</Columns>
</asp:datagrid>

When I press the submit button, I want to save the selected names (selected via the checkbox) in some sort of a format (like ArrayList or Vector)

Has anyone got any examples of such?

Also, so far I just wanted to check if the selection works and if I can actually count the number of selected rows.  

So I used the the following code:

private void Submit_Button_Click(object sender, System.EventArgs e)
{
int rowCount = 0;
    

   foreach(DataGridItem resourcesDataGridItem in resourcesDataGrid.Items)
   {
         CheckBox myCheckbox = (CheckBox)resourcesDataGridItem.Cells[0].Controls[1];
                                
        if(myCheckbox.Checked == true)
        {
            rowCount++;
                                                    }
    }
    resultlbl.Text = rowCount.ToString();
            
}

Unfortunately it does not seem to work as it resets to 0 each time. If I mark the checkbox in the datagrid as Checked then each time it will return the number of check boxes (because they are all selected)

What am I doing wrong?

Marika

RE: datagrid checkbox asp.net c#

Here's what I used that get the index number of the rows that is checked, creates arraylist, and passed into a querystring


Sub OnNext (sender as object, e as EventArgs)
  Dim selectedRows as ArrayList
  selectedRows = new ArrayList()
  Dim aitem as DataGridItem
  for each aitem In DataGrid1.Items
      Dim chkBox as CheckBox
    chkBox = aitem.FindControl("selectRow")
    if (chkBox.Checked)
        dim id as Textbox
        id = aitem.FindControl("ID")
        selectedRows.Add(ID.Text)
    end if
  next aitem    
  if (selectedRows.Count > 0)
      dim nextURL as Stringbuilder
    nextURL = new StringBuilder ("printquote.aspx?")
    Dim productID as string
    for each productID in selectedRows
        nextURL.Append("ID=")
        nextURL.Append(productID)
        nextURL.Append("&")
    next productID    
    Response.Redirect(nextURL.ToString())
  End if
End Sub

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