需求: 下拉表格内容时,一个文本框需要对多列的内容进行搜索,不说这里搜索的速度,但也是能够满足一般的需求
/// <summary>
/// 设置GridLookUpEdit多列过滤
/// </summary>
/// <param name="repGLUEdit">GridLookUpEdit的知识库,eg:gridlookUpEdit.Properties</param>
public void SetGridLookUpEditMoreColumnFilter(DevExpress.XtraEditors.Repository.RepositoryItemGridLookUpEdit repGLUEdit)
{
repGLUEdit.EditValueChanging += (sender, e) =>
{
this.BeginInvoke(new System.Windows.Forms.MethodInvoker(() =>
{
GridLookUpEdit edit = sender as GridLookUpEdit;
DevExpress.XtraGrid.Views.Grid.GridView view = edit.Properties.View as DevExpress.XtraGrid.Views.Grid.GridView;
//获取GriView私有变量
System.Reflection.FieldInfo extraFilter = view.GetType().GetField("extraFilter", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance);
List<DevExpress.Data.Filtering.CriteriaOperator> columnsOperators = new List<DevExpress.Data.Filtering.CriteriaOperator>();
foreach (GridColumn col in view.VisibleColumns)
{
//这里判断哪一种条件的列头是否可以进行搜索,你也可以自己修改自己需要的情况!
if (col.Visible && col.ColumnType == typeof(string))
columnsOperators.Add(new DevExpress.Data.Filtering.FunctionOperator(DevExpress.Data.Filtering.FunctionOperatorType.Contains,
new DevExpress.Data.Filtering.OperandProperty(col.FieldName),
new DevExpress.Data.Filtering.OperandValue(edit.Text)));
}
string filterCondition = new DevExpress.Data.Filtering.GroupOperator(DevExpress.Data.Filtering.GroupOperatorType.Or, columnsOperators).ToString();
extraFilter.SetValue(view, filterCondition);
//获取GriView中处理列过滤的私有方法
System.Reflection.MethodInfo ApplyColumnsFilterEx = view.GetType().GetMethod("ApplyColumnsFilterEx", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance);
ApplyColumnsFilterEx.Invoke(view, null);
}));
};
}