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ASPxGridHeaderFilterEventArgs.CreateShowBlanksValue(String) Method

Creates and returns the (Blanks) filter item used to filter a column by blank values.

Namespace: DevExpress.Web

Assembly: DevExpress.Web.v24.2.dll

NuGet Package: DevExpress.Web

#Declaration

public FilterValue CreateShowBlanksValue(
    string displayText
)

#Parameters

Name Type Description
displayText String

A String value that specifies the item’s display text.

#Returns

Type Description
FilterValue

Returns the filter item used to filter by blank values.

#Remarks

When creating custom filter values by handling the ASPxGridView.HeaderFilterFillItems event, you can use the CreateShowBlanksValue method to create the (Blanks) filter item. The created item can be added to a header filter using the event argument’s ASPxGridHeaderFilterEventArgs.AddValue method.

protected void ASPxGridView1_HeaderFilterFillItems(object sender, DevExpress.Web.ASPxGridViewHeaderFilterEventArgs e)
{
    e.Values.Clear();
    FilterValue showBlanksItem = e.CreateShowBlanksValue("Blank Items");
    e.Values.Add(showBlanksItem);
}
See Also