protected void ASPxGridView1_CustomCallback(object sender, DevExpress.Web.ASPxGridViewCustomCallbackEventArgs e) { ASPxGridView thisASPxGridView = sender as ASPxGridView; foreach (GridViewColumn column in thisASPxGridView.Columns) { GridViewDataColumn dataColumn = column as GridViewDataColumn; if (dataColumn == null) { continue; } ASPxTextBox filterCellTextBox = thisASPxGridView.FindFilterCellTemplateControl(dataColumn, "ASPxTextBox1") as ASPxTextBox; if (filterCellTextBox == null) { continue; } if (e.Parameters == "clear") { filterCellTextBox.Text = string.Empty; } thisASPxGridView.AutoFilterByColumn(dataColumn, filterCellTextBox.Text); } }