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Setting Filters Programmatically (composite descriptors)

Using CompositeFilterDescriptor

To filter a single data field by multiple values, you have to use the CompositeFilterDescriptor object. It contains a collection of filter descriptors objects and the logical operator for that filters.

Setting composite filter descriptors

CompositeFilterDescriptor compositeFilter = new CompositeFilterDescriptor();
compositeFilter.FilterDescriptors.Add(new FilterDescriptor("UnitsInStock", FilterOperator.IsGreaterThan, 100));
compositeFilter.FilterDescriptors.Add(new FilterDescriptor("ProductName", FilterOperator.StartsWith, "G"));
compositeFilter.LogicalOperator = FilterLogicalOperator.And;
this.radGridView1.FilterDescriptors.Add(compositeFilter);

Dim compositeFilter As New CompositeFilterDescriptor()
compositeFilter.FilterDescriptors.Add(New FilterDescriptor("UnitsInStock", FilterOperator.IsGreaterThan, 100))
compositeFilter.FilterDescriptors.Add(New FilterDescriptor("ProductName", FilterOperator.StartsWith, "G"))
compositeFilter.LogicalOperator = FilterLogicalOperator.[And]
Me.RadGridView1.FilterDescriptors.Add(compositeFilter)

The CompositeFilterDescriptors supports And and Or logical operators. Result of the above example using And logical operator:

gridview-filtering-setting-filters-programmatically-composite-descriptors 001

Result of the above example using Or logical operator:

gridview-filtering-setting-filters-programmatically-composite-descriptors 002

More Complex Composite Filters

The composite filters allow you to create more complex filtering expressions. Such a complex filtering expression might include filters for multiple fields combined with different logical operators, like (UnitsOnOrder= 0 AND (UnitsInStock> 100 OR ProductName.StartsWith(ā€œGā€))).

Setting complex composite filter descriptors

CompositeFilterDescriptor compositeFilter1 = new CompositeFilterDescriptor();
compositeFilter1.FilterDescriptors.Add(new FilterDescriptor("UnitsInStock", FilterOperator.IsGreaterThan, 100));
compositeFilter1.FilterDescriptors.Add(new FilterDescriptor("ProductName", FilterOperator.StartsWith, "G"));
compositeFilter1.LogicalOperator = FilterLogicalOperator.Or;
FilterDescriptor filter2 = new FilterDescriptor("UnitsOnOrder", FilterOperator.IsEqualTo, 0);
CompositeFilterDescriptor filterDescriptor2 = new CompositeFilterDescriptor();
filterDescriptor2.FilterDescriptors.Add(compositeFilter);
filterDescriptor2.FilterDescriptors.Add(filter2);
filterDescriptor2.LogicalOperator = FilterLogicalOperator.And;
this.radGridView1.FilterDescriptors.Add(filterDescriptor2);

Dim compositeFilter1 As New CompositeFilterDescriptor()
compositeFilter1.FilterDescriptors.Add(New FilterDescriptor("UnitsInStock", FilterOperator.IsGreaterThan, 100))
compositeFilter1.FilterDescriptors.Add(New FilterDescriptor("ProductName", FilterOperator.StartsWith, "G"))
compositeFilter1.LogicalOperator = FilterLogicalOperator.[Or]
Dim filter2 As New FilterDescriptor("UnitsOnOrder", FilterOperator.IsEqualTo, 0)
Dim filterDescriptor2 As New CompositeFilterDescriptor()
filterDescriptor2.FilterDescriptors.Add(compositeFilter)
filterDescriptor2.FilterDescriptors.Add(filter2)
filterDescriptor2.LogicalOperator = FilterLogicalOperator.[And]
Me.RadGridView1.FilterDescriptors.Add(filterDescriptor2)

Setting Filters for Excel-like filtering

The following example shows how you can add descriptors that will be reflected in the Excel-like filter popup.

Setting filters for Excel-like filtering

var filterDescriptor = new FilterDescriptor();
filterDescriptor.PropertyName = "Title";
filterDescriptor.Value = "Sales Representative";
filterDescriptor.Operator = FilterOperator.IsNotEqualTo;
var cfd = new CompositeFilterDescriptor();
cfd.LogicalOperator = FilterLogicalOperator.And;
cfd.FilterDescriptors.Add(filterDescriptor);
cfd.IsFilterEditor = true;
this.radGridView1.FilterDescriptors.Add(cfd);
this.radGridView1.MasterTemplate.ExcelFilteredColumns.Add(this.radGridView1.Columns["Title"]);

Dim filterDescriptor As New FilterDescriptor()
filterDescriptor.PropertyName = "Title"
filterDescriptor.Value = "Sales Representative"
filterDescriptor.Operator = FilterOperator.IsNotEqualTo
Dim cfd As New CompositeFilterDescriptor()
cfd.LogicalOperator = FilterLogicalOperator.And
cfd.FilterDescriptors.Add(filterDescriptor)
cfd.IsFilterEditor = True
Me.RadGridView1.FilterDescriptors.Add(cfd)
Me.RadGridView1.MasterTemplate.ExcelFilteredColumns.Add(Me.RadGridView1.Columns("Title"))

See Also

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