Error while deletion of data in gridview.

Priyanka Singh

7y1.2k.NET

The Declarative Approach
While using TemplateField, we can directly use the OnClientClick event of the LinkButton Server control and call JavaScript confirm function, as given below.

"lnkDelete"runat="server"
OnClick="lnkDelete _Click" OnClientClick="return confirmOnDelete('');">Delete

The Code behind Approach
The Code Behind approach is almost the same, as we did using the RowDataBound event to access the ShowDeleteButton. The output is given below.

protected void gvEmployee_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowState != DataControlRowState.Edit) // check for RowState
{
if (e.Row.RowType == DataControlRowType.DataRow) //check for RowType
{
string id = gvEmployee.DataKeys[e.Row.RowIndex].Value.ToString();
//cast the ShowDeleteButton link to linkbutton
LinkButton lb = (LinkButton)e.Row.Cells[4].FindControl("lnkDelete");
if (lb != null)
{
//attach the JavaScript function and pass the ID as the paramter
lb.Attributes.Add("Onclick", "return confirmOnDelete('" + id + "');");
}
}
}
}

It shows as error

7 Replies

Know the answer? Post it — somebody with the same question will find it here.

Jignesh Kumar7y ago
Hi Priyanka,

Please find below link,
https://www.aspsnippets.com/Articles/ASPNet-GridView---Delete-Row-with-Confirmation.aspx
Laxmidhar Sahoo7y ago
hi

lnkDelete _Click - this may be an event or a function. Where you define this
Priyanka Singh7y ago
I already corrected OnClick="lnkDelete_Click" but still didnt work because I didnt defined "lnkDelete_Click" function.
Bryian Tan7y ago
There is a space in the OnClick="lnkDelete _Click". attributes as pointed out by other member. Should be OnClick="lnkDelete_Click".
Anoop Kumar Sharma7y ago
Hi Priyanka,

Please check the below article on delete records
https://www.c-sharpcorner.com/UploadFile/1e050f/delete-records-from-gridview-using-checkbox-in-Asp-Net/

Hope this will help you.
Chetan Ranpariya7y ago
There is a space in OnClick="lnkDelete _Click". You need to change it to OnClick="lnkDelete_Click".

This would resolve the error.
Amit Kumar7y ago
Hi, You are doing wrong in this line . OnClick="lnkDelete _Click" here you should bind some values like. OnClick="lnkDelete _Click('')"