Asking for confirmation before deleting records in GridView of ASP.NET 2005

[ITCraze]

Hello everyone,


I have a Gridview , whose first column is template colums which contains checkboxes , outside my GridView I a have a delete button.
So in this application,when the user check any checkbox ,and when click on the delete button , it should ask for the confirmation 'Are you sure you want to delete these records'.

But you Know my problem is that:

I have added the following line to page_load event:

btnDelete.Attributes.Add["onclick"]="return confirm('Are you sure you want to delete these records')";

On running it works but it also asks for confirmation when I have not selected any of the checkboxes.

So please give me the solution ,whether I should add any javascript function for checking whether the checkbox has been checked or not.

But I don't know how to make that javacript function for checking whether the checkbox of the GridView are selected or not .Plese help me.

[kenobewan]

One one would be to use a separate event and not use the page_load. HTH.

[ITCraze]

Thank you for replying.But it will be better if you will explain me more precisely.


what I asked was:

I have a Gridview , whose first column is template colums which contains checkboxes , outside my GridView I a have a delete button.
So in this application,when the user check any checkbox ,and when click on the delete button , it should ask for the confirmation 'Are you sure you want to delete these records'.

But you Know my problem is that:

I have added the following line to page_load event:

btnDelete.Attributes.Add["onclick"]="return confirm('Are you sure you want to delete these records')";

On running it works but it also asks for confirmation when I have not selected any of the checkboxes.

So please give me the solution ,whether I should add any javascript function for checking whether the checkbox has been checked or not.

But I don't know how to make that javacript function for checking whether the checkbox of the GridView are selected or not .Plese help me.

[mzmishra]

something like this


//This will be part of your aspx /ascx file

<INPUT id="btnDelete" type="button" value="Delete" name="btnDelete"
runat="server">


function ConfirmSave(msg)
{
var confirmationvalue = confirm(msg);
}

//This will be part of your aspx.cs /ascx.cs file

private void btnDelete_ServerClick(object sender, EventArgs e)
{


int cnt;
cnt= Grid.Items.Count;

for (int i=0; i<cnt; i++)
{
CheckBox chkBox = Grid.Items[i].Cells[0].Controls[1] as CheckBox;
if (chkBox.Checked)
{
ExecuteScript(this.Page, "ConfirmSave('Your message text');");
}
}


}


public static void ExecuteScript(Page webpage_, string script_)
{
StringBuilder scriptBuilder = new StringBuilder( @"<script language=JavaScript>");
scriptBuilder.Append(script_);
scriptBuilder.Append(@"</script>");
JavaScriptUtil.RegisterScript(webpage_, "2", scriptBuilder.ToString());
webpage_.Response.Write(scriptBuilder.ToString());

}

[ITCraze]

Thank you for replying to my query.

But when I used what u have suggested but my application gives me error like:

JavaScriptUtil is not in the current context.

Please help me.