LookUpHelper.GetLookUpValues(ValueSourceSettings, DataContextBase, IParameterEditorValueProvider) Method
In This Article
Returns a collection of parameter look-up values.
Namespace: DevExpress.XtraReports.Parameters
Assembly: DevExpress.Printing.v24.2.Core.dll
NuGet Package: DevExpress.Printing.Core
#Declaration
public static LookUpValueCollection GetLookUpValues(
ValueSourceSettings valueSourceSettings,
DataContextBase dataContext,
IParameterEditorValueProvider parameterValueProvider = null
)
#Parameters
Name | Type | Description |
---|---|---|
value |
Value |
Settings for a source of the parameter look-up values. |
data |
DevExpress. |
A Data |
#Optional Parameters
Name | Type | Default | Description |
---|---|---|---|
parameter |
IParameter |
null | An object that implements the IParameter |
#Returns
Type | Description |
---|---|
Look |
A collection of parameter look-up values. |
#Example
The following code example demonstrates how to use the GetLookUpValues
method of the LookUpHelper class to access look-up values of a multi-value report parameter. The example also shows how to display the descriptions of the selected parameter values in the report’s XRLabel control.
using DevExpress.Data.Browsing;
using DevExpress.XtraReports.Parameters;
using System;
// ...
private void XtraReport1_BeforePrint(object sender, System.ComponentModel.CancelEventArgs e) {
var valueSourceSettings = this.Parameters["param1"].ValueSourceSettings;
var dataContext = (sender as IServiceProvider).GetService(typeof(DataContext)) as DataContext;
var lookupValues = LookUpHelper.GetLookUpValues(valueSourceSettings, dataContext);
var selectedValues = this.Parameters["param1"].Value as Int32[];
var text = "";
int step = 0;
for (var j = 0; j < lookupValues.Count; j++) {
if (Array.IndexOf(selectedValues, Convert.ToInt32(lookupValues[j].Value)) > -1) {
step += 1;
if (step == selectedValues.Length) {
text += lookupValues[j].Description;
} else {
text += lookupValues[j].Description + ", ";
}
}
}
xrLabel1.Text = text;
}
See Also