void BindData()
{
ClassGradProgram gp = new ClassGradProgram();
DataTable dt = gp.GetGradProgram("", "");
GridView1.DataSource = dt;
GridView1.DataBind();
SetViewState(dt);
}
protected void btnSearchRefresh_Click(object sender, EventArgs e)
{
ClearData();
ClassGradProgram gp = new ClassGradProgram();
DataTable dt = gp.GetGradProgram("", "");
GridView1.DataSource = dt;
GridView1.DataBind();
SetViewState(dt);
}