SearchLookUpEdit and GridLookUpEdit

Basic data:

 public class Product
    {
        public int Id { get; set; }
        public string Model { get; set; }
        public string Name { get; set; }
    }
   public class Entility 
   {
       private static string GetChar(int number)
       {
           string[] array = new string[] { "A","B","C","D","E","F","G","H","I"};
           string result = array[number % 9];
           return result;
       }
       private static string GetName(int number)
       {
           string[] array = 
           {
               "Unitch data collector","MS Scanner","105SL","TSC","PH880","MS320 portable printer","PA700","DSX800 computer","HP printer"
           };
           string result = array[number % 9];
           return result;
       }

       public static List<Product> GetProductList() 
       {
           List<Product> list = new List<Product>();
           for (int i = 0; i < 200; i++)
           {
               Product product = new Product() 
               {
                   Id=100+i,Model=GetChar(i)+i.ToString()+"DLJ",Name=GetName(i)+i.ToString()
               };
               list.Add(product);
           }
           return list;
       }

1. Use of SearchLookUpEdit control: Feel whether this control is tall or not.

Data binding and add row number index in front

   private void Form3_Load(object sender, EventArgs e)
        {
            List<Product> list = Entility.GetProductList();
            searchLookUpEdit1.Properties.DataSource = list;
            searchLookUpEdit1.Properties.DisplayMember = "code";
            searchLookUpEdit1.Properties.ValueMember = "code";
 SearchLookUpEdit1.Properties.NullText = @"Please select";
         }

        private void searchLookUpEdit1View_CustomDrawRowIndicator(object sender, DevExpress.XtraGrid.Views.Grid.RowIndicatorCustomDrawEventArgs e)
        {
            if (e.RowHandle >= 0 && e.Info.IsRowIndicator)
            {
                e.Info.DisplayText = (e.RowHandle + 1).ToString();
            }
        }

Add data column:

Simple attributes:

  //Double click to display the drop-down list
            searchLookUpEdit1.Properties.ShowDropDown = ShowDropDown.DoubleClick;
            searchLookUpEdit1.Properties.ImmediatePopup = true;//Show drop-down list
            searchLookUpEdit1.Properties.TextEditStyle = TextEditStyles.DisableTextEditor;//This control does not allow input
            searchLookUpEdit1.Properties.NullText = "";//Clear the default value

2. GridLookUpEdit control is simple to use Effect:

Data binding:

  List<Product> list = Entility.GetProductList();
  gridLookUpEdit1.Properties.DataSource = list;

Add the displayed data column: and perform data binding to set the width of the column

GridLoolUpEdit defaults to fuzzy filtering based on the fields bound to DisplayMember.

Set the filter function based on multiple columns:

  private void FilterLookup(object sender)
        {
           

            GridLookUpEdit edit = sender as GridLookUpEdit;
            GridView gridView = edit.Properties.View as GridView;
            FieldInfo fi = gridView.GetType().GetField("extraFilter", BindingFlags.NonPublic | BindingFlags.Instance);
            BinaryOperator op1 = new BinaryOperator("Id", "%" + edit.AutoSearchText + "%", BinaryOperatorType.Like);
            BinaryOperator op2 = new BinaryOperator("Model", "%" + edit.AutoSearchText + "%", BinaryOperatorType.Like);
            BinaryOperator op3 = new BinaryOperator("Name", "%" + edit.AutoSearchText + "%", BinaryOperatorType.Like);
            string filterCondition = new GroupOperator(GroupOperatorType.Or, new CriteriaOperator[] { op1, op2,op3 }).ToString();
            fi.SetValue(gridView, filterCondition);

            MethodInfo mi = gridView.GetType().GetMethod("ApplyColumnsFilterEx", BindingFlags.NonPublic | BindingFlags.Instance);
            mi.Invoke(gridView, null);
        }

     


        private void gridLookUpEdit1_EditValueChanging(object sender, DevExpress.XtraEditors.Controls.ChangingEventArgs e)
        {
            BeginInvoke(new MethodInvoker(delegate()
            {
                FilterLookup(sender);

            }));
        }

Show row number for filtered column

        private void gridLookUpEdit1View_CustomDrawRowIndicator(object sender, RowIndicatorCustomDrawEventArgs e)
        {
            if (e.Info.IsRowIndicator && e.RowHandle >= 0)
            {
                e.Info.DisplayText = (e.RowHandle + 1).ToString();
            }
        }

Some simple property settings:

     //Double click to display the drop-down list
            gridLookUpEdit1.Properties.ShowDropDown = ShowDropDown.DoubleClick;
            gridLookUpEdit1.Properties.ImmediatePopup = true;//Show drop-down list
            gridLookUpEdit1.Properties.TextEditStyle = TextEditStyles.Standard;//Allow input
            gridLookUpEdit1.Properties.NullText = "";//Clear the default value

Set the width of the drop-down list

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