Filtering of Multi-Column ComboBox in C#.NET

Kettic Multi-Column ComboBox is a combobox component that combines the features and functionality of KetticComboBox control and KetticGridView control. This control integrates the Kettic GridView component into the drop-down of it. The drop-down element is an object of the KetticMultiColumnComboBoxElement and is capable of customizing the drop-down appearance, animation and changing the size of the combobox.

How to Filter Multi-Column ComboBox in C#.NET

Because the KetticGridView control hosted in the drop-down does not support filtering operation, the KetticMultiColumnComboBox contains the EnableFilter property to perform the filtering operation. The following steps demonstrate how to filter data in Multi-Column ComboBox in C#.NET projects.

We need to set the EnableFilter property to True to enable the filtering functionality
Specify the ShowMember to the field that will be filtered in multiple columns ComboBox.
Set the filtering expression to specify the data filtering rules the Multi-Column ComboBox control
Add the filtering expression to MasterTemplate in the C#.NET project

C# code for filtering data in Multi-Column ComboBox WinForms control


this.ketticMultiColumnComboBox1.EnableFilter = true;
this.ketticMultiColumnComboBox1.ShowMember = "StudentName";
FilterDescriptor filter = new FilterDescriptor();
filter.PropertyName = this.ketticMultiColumnComboBox1.ShowMember;
filter.Operator = FilterOperator.Contains;
this.ketticMultiColumnComboBox1.EditorControl.MasterTemplate.FilterDescriptors.Add(filter);

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