How to Clear DataGridView in C# .net

      In somettimes the following Code
Shows Problem Clearing Data from datagridView


dataGridView1.Rows.Clear()

 Then The Code Below Will Be Helpfull Clearing Data from DataGridView in C#.Net


 ((DataTable)dataGridView1.DataSource).Rows.Clear();

How to make a Textbox to accept only digit in c#.net

 

 In the Keypress Event of a textBox just write the following Code

then it will get only number and no letter

   private void txtSalary_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)

        {

            e.Handled = !(char.IsNumber(e.KeyChar) || e.KeyChar == '.' || e.KeyChar == (char)Keys.Back);

        }