Hi,

MM.NET, C#, ASP.NET

I have a form displaying a 1 to many relationship. The many side is displayed in a grid view and rows can be added/edited/deleted.

Currently I have code like this, that will delete the row in the grid:

        protected void grdRiders_RowDeleting(object sender, GridViewDeleteEventArgs e)
        {
            DataSet dsPolicyRider = (DataSet)Session["dsPolicyRider"];
            dsPolicyRider.Tables[0].Rows[e.RowIndex].Delete();
            this.BindControl(this.grdRiders);
        }

When the row is deleted, it is removed from the display in the Grid View. However, when I then use the page's Save button, I get this error in VS2008:

Exception has been thrown by the target of an invocation.

If I stop the application, this error then gets displayed in the browser:

Deleted row information cannot be accessed through the row.

How does one delete rows from a grid successfully?

< update >
I just noticed that this error only occurs if I have two rows in the grid and I delete the first one. If I just have one row, or delete the last row, then it is fine.