Parameter.Value Property
Specifies a parameter value.
Namespace: DevExpress.XtraReports.Parameters
Assembly: DevExpress.Printing.v23.2.Core.dll
NuGet Package: DevExpress.Printing.Core
Declaration
Property Value
| Type | Description |
|---|---|
| Object | A parameter value. |
Remarks
You can set the Value property to a static value or assign an expression to this property. Set a parameter’s Type property to the type of the assigned value.
Example
To create a parameter in code, initialize a Parameter class instance and specify its properties. Add the parameter to the report’s Parameters collection.
The code sample below demonstrates how to create a date parameter, specify an expression for the parameter’s default value, and reference the parameter in a label‘s expression.
using System.Drawing;
using DevExpress.XtraReports.UI;
// ...
using DevExpress.XtraReports.Parameters;
// ...
using DevExpress.XtraReports.Expressions;
// ...
// Create a date report parameter.
// Use an expression to specify the parameter's default value.
var dateParameter = new Parameter() {
Name = "date",
Description = "Date:",
Type = typeof(System.DateTime),
ExpressionBindings = { new BasicExpressionBinding("Value", "Now()") }
};
// Create a label and bind the label's Text property to the parameter value.
// Use the parameter's name to reference the parameter in the label's expression.
var dateLabel = new XRLabel() {
ExpressionBindings = { new ExpressionBinding("Text", "?date") },
BoundsF = new RectangleF(0, 0, 200, 50),
};
// Create a report and add the label to the report's Detail band.
var report = new XtraReport() {
Bands = { new DetailBand() { Controls = { dateLabel } } },
};
// Add the parameter to the report's Parameters collection.
report.Parameters.Add(dateParameter);
Related GitHub Examples
The following code snippets (auto-collected from DevExpress Examples) contain references to the Value property.
Note
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