Parameter.MultiValue Property
Specifies whether you and end users can pass multiple values to a report parameter.
Namespace: DevExpress.XtraReports.Parameters
Assembly: DevExpress.Printing.v24.1.Core.dll
NuGet Package: DevExpress.Printing.Core
Declaration
[TypeConverter("DevExpress.XtraReports.Design.RangeIncompatiblePropertyConverter,DevExpress.Utils.v24.1.UI, Version=24.1.99.0, Culture=neutral, PublicKeyToken=c38a27d2243c2672")]
[XtraSerializableProperty]
public virtual bool MultiValue { get; set; }
Property Value
Type | Description |
---|---|
Boolean | true to make a parameter multivalue; otherwise, false. |
Example
The code sample below demonstrates how to do the following:
- Create a multi-value report parameter.
- Configure a DynamicListLookUpSettings class instance to load predefined values for this parameter from a database.
- Select all predefined parameter values as defaults.
using DevExpress.XtraReports.Parameters;
// ...
// Create a parameter and set up its properties. Set the
// parameter's MultiValue property to true to make it multi-value.
var parameter1 = new Parameter() {
Name = "categories",
Description = "Categories: ",
Type = typeof(System.Int32),
MultiValue = true
};
// Create a DynamicListLookUpSettings class instance and
// configure its properties to retrieve the parameter's predefined values
// from the report's data source.
var lookupSettings = new DynamicListLookUpSettings() {
DataSource = report.DataSource,
DataMember = "Categories",
DisplayMember = "CategoryName",
ValueMember = "CategoryId"
};
// Assign the setting to the parameter's LookUpSettings property.
parameter1.LookUpSettings = lookupSettings;
// Enable the parameter's SelectAllValues property to use
// all predefined values as defaults.
parameter1.SelectAllValues = true;
Related GitHub Examples
The following code snippets (auto-collected from DevExpress Examples) contain references to the MultiValue property.
Note
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