public void BindData()
{
string where = GetWhere();
DataTable dt = userManager.GetAllUserMessage(where);
UserGridView.DataSource = dt;
UserGridView.AutoResizeColumns(
DataGridViewAutoSizeColumnsMode.AllCellsExceptHeader);
this.UserGridView.AutoSizeColumnsMode = System.Windows.Forms.DataGridViewAutoSizeColumnsMode.Fill;
}