Trigger a function from a linkbutton in gridview footer that iterates through all rows in the gridview

To trigger a function or sub from a linkbutton in a gridview footer follow these steps:

1. Put a gridview on your page with some datarows in it
2. Edit the templates on the gridview and insert a linkbutton in the footer template of the column where you want the linkbutton to go.
3. Edit the tag of the linkbutton and put the name of a function or sub in the "Onclick" property of the linkbutton's tag.
4. Then create a function or sub in your code with the same name.
5. This function or sub will then fire when the linkbutton is clicked.

See example below:

In the aspx page, here is the code in the gridview's column footer template:

Here is the code in vb code page:

  Sub Release()

    For Each grRow As GridViewRow In gvCourseRelease.Rows

      If grRow.RowType = DataControlRowType.DataRow Then

        If CType(grRow.FindControl("chkSelect"), CheckBox).Checked Then

          ' Do something with the checked row....

        End If

      End If

    Next

  End Sub