private void btnloc_Click_1(object sender, EventArgs e)
{
string input = txttimmon.Text;
bool isString = true;
if (string.IsNullOrEmpty(input))
{
return;
}
for (int i = 0; i < input.Length; i++)
{
if (char.IsNumber(input[i]))
{
isString = false;
}
}
if (isString)
{
GridViewmonhoc.DataSource = monhocBUS.loctheoten(input);
GridViewmonhoc.DataSource = monhocBUS.Loctheoma(input);
}
}
