Hi,
In my Datagridview contains itemno,itemdescription,quantity,price columns.
this values can view in crystal report.in crystal report only 10 colums can able to view.
so,in item descriptionin cell only 10 lines i have to enter .if it is more than that i want to display messagebox and chance is there for only one item description contails more than 10 lines.In this situation also i want to display error message.




private void dataGridView1_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
{
TextBox txt=e.Control as TextBox;
txt.TextChanged +=new EventHandler(txt_TextChanged);
}

void txt_TextChanged(object sender, EventArgs e)
{

}