FilterValue.IsFilterByValue Property
Indicates whether the Equals to filter criterion is used.
Namespace: DevExpress.Web
Assembly: DevExpress.Web.v24.2.dll
Declaration
Property Value
Type | Description |
---|---|
Boolean |
|
Remarks
The FilterValue class provides two properties that enable you to specify the filter expression. These are: FilterValue.Value and FilterValue.Query properties.
The IsFilterByValue property returns true
if the FilterValue.Query property isn’t specified. The filter expression specified by the FilterValue.Query property takes priority over the filter expression specified by the FilterValue.Value property.
Use the FilterValue.Value property to create the Equals to expression.
// Example: Equals to 50
FilterValue filterItem1 = new FilterValue();
filterItem1.DisplayText = "Filter Value1";
filterItem1.Value = "50";
e.Values.Add(filterItem1);
To create complex filter expressions, use the FilterValue.Query property:
protected void ASPxGridView1_HeaderFilterFillItems(object sender,
ASPxGridViewHeaderFilterEventArgs e)
{
if (e.Column.FieldName != "ProductName") return;
e.Values.Clear();
FilterValue fv = new FilterValue("Low Price Products", null);
fv.Query = string.Format("[UnitPrice] < {0} AND [Discontinued] = {1}", 10, true);
e.Values.Add(fv);
}