XtraReportBase.GetPreviousColumnValue(String) Method
Gets the previous value of the specified column in the report’s XtraReportBase.DataSource.
Namespace: DevExpress.XtraReports.UI
Assembly: DevExpress.XtraReports.v18.2.dll
Declaration
Parameters
| Name | Type | Description |
|---|---|---|
| columnName | String | A String, which specifies the name of the column whose value to be obtained. |
Returns
| Type | Description |
|---|---|
| Object | An object which represents the previous value of the specified column in the data source. If the specified column was not found, this method returns null (Nothing in Visual Basic). |
Remarks
Use the GetPreviousColumnValue, XtraReportBase.GetCurrentColumnValue and XtraReportBase.GetNextColumnValue methods to determine the value of the specified data column when creating a report, for example, in the XRControl.BeforePrint event handler.
To avoid casting the object returned by this method to an appropriate type, use the XtraReportBase.GetPreviousColumnValue<T> method, which returns a strongly typed object.