Activereports report practical application tutorial (19) -- multi data source binding

ActiveReports Support single data source binding and multi data source binding , This article will focus on how to create regional reports and RDL/ Set multiple data sources for page reports .

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Regional report multi data source binding

ActiveReports The implementation method of multi data source binding in regional reports is in  ActiveReports Regional reports （Section） Loading multiple data sources   The article has a very detailed introduction .

RDL/ Page report multi data source binding

RDL/ Multiple data source connections can be added to the page report （DataSource）, Multiple datasets can be added under each data source （DataSet, The DataSet Is not System.Data.DataSet type , It is GrapeCity.ActiveReports.PageReportModel.DataSet type ）. Next, we will add a data source for the report , And add two datasets to the data source （ Categories and products ）.

First step ：  Create a project named PageReport_DataSource_MultiSources.rdlx Page report for :

The second step ： from Visual Studio In the menu bar “ View ”->“ Other windows ”->“ Report Explorer V9” Open in ActiveReports Report Explorer , here , You can see “ data source ” node , Right click the node and select “ Add data sources ” A menu item , In the pop-up “ Report data source ” In the dialog box, follow the wizard steps to connect to a Access database , Here's the picture ：

Click on “ determine ” Button , Complete data source creation , here , In the report Explorer window “ data source ” A new node named “DataSource1” Child nodes of .

The third step ： stay “DataSource1” Right click the node , choice “ Add dataset ” A menu item , In the pop-up dialog box “ Inquire about ” Write the following... In the tab SQL Query statement [Select * from Category ], And then click “ determine ” Button to complete the data set creation operation . After returning to the report resource management window , Click on “DataSet1” node , You can see SQL The query statement returns all the data fields of the query result .

Step four ： Repeat step three , Add a name “DataSet2” Data set of , Corresponding SQL The query statement is [Select * from product ] , And then click “ determine ” Button to complete the data set creation operation . After returning to the report resource management window , Click on “DataSet2” node , You can see SQL The query statement returns all the data fields of the query result .

Step five ： stay Visual Studio Table controls in the toolbox （Table） Drag to the report design interface , Then click on the table Detail line Cells in , here , It will automatically display DataSet1 and DataSet2 Two data sets , We specify for the first table DataSet1 data source ; Add the second table repeatedly and specify DataSet2 As its data source .

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Reprinted from Grape City