asp.net gridview checkbox selection
.net, asp.net, checkbox, gridview
Solution
Try this:
CheckBox chkBx = sender as CheckBox;
Rather than iterate all the rows.
I haven't used CheckBox's in a GridView in this way myself. Usually I would use the GridView's OnRowCommand event instead and use the RowIndex or CommandArgument value to update the database.
Thinking about it OnRowcommand could be tricky for a CheckBox to fire, a better solution might be sticking with the CheckChanged event of the checkbox and navigate up to the GridViewRow serverside using controls NamingContainer. Something like:
GridViewRow row = chkBx.NamingContainer as GridViewRow;
I'm assuming the goes CheckBox => Cell => Row if you Google ASP.NET NamingContainer you'll get some more specifics.
Problem
Need some help to solve this. I have a gridview and inside the gridview I have a checkbox and after clicking the checkbox, I am doing a postback event and trying to update this particular row only on the database. This is my gridview checkbox code. see the OnCheckedChanged. ``` <asp:TemplateField HeaderText="Sample"> <ItemTemplate> <asp:CheckBox runat="server" ID="chkSample" Checked='<%# Bind("Sample") %>' OnCheckedChanged="UpdateSupplyLed" AutoPostBack="True"> </asp:CheckBox> </ItemTemplate> </asp:TemplateField> ``` Code: ``` protected void UpdateSupplyLed(object sender, EventArgs e) { foreach (GridViewRow di in SamplingGridView.Rows) { CheckBox chkBx = (CheckBox)di.FindControl("chkSample"); if (chkBx != null && chkBx.Checked) { //update database logic here. } } } ``` The above code works fine but it is getting me all the checkboxes that are checked irresepective of the one that I just checked. I don't want all of them. How can I get the only one row value that have been just checked. Some of the rows might have been checked already because the status is true for those records and I don't want to update those records. I think I've got my question right! Update: The answer is: ``` protected void UpdateSupplyLed(object sender, EventArgs e) { CheckBox chkSampleStatus = sender as CheckBox; bool sample = chkSampleStatus.Checked; GridViewRow row = chkSampleStatus.NamingContainer as GridViewRow; TextBox txtId = row.FindControl("Id") as TextBox; int id = Int32.Parse(txtId.Text); } ```