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How to Configure Tablix with Multiple Datasets

This section explains how to configure the tablix with multiple datasets. In Report Designer, the enableTableMultipleDataAssign client-side API allows you to configure data from multiple datasets into a Tablix.

Create report designer javascript application

Refer to the Getting started to create a Report Designer JavaScript application.

Set the enableTableMultipleDataAssign API

During the initialization of the Report Designer control, set the enableTableMultipleDataAssign property to True. When this property is enabled, you can bind data from multiple datasets to a Tablix. The dataset assigned in the Dataset Property of tablix is bound to tablix, while fields from other datasets are considered as expression.

Add the following code within the <body> tag of the web Report Designer HTML page.

    <!-- Creating a div tag which will act as a container for boldReportDesigner widget.-->
    <div style="height: 600px; width: 950px; min-height: 400px;" id="designer"></div>
    <script type="text/javascript">
        $(function () {
            $("#designer").boldReportDesigner({
                serviceUrl: "https://demos.boldreports.com/services/api/ReportingAPI",
                enableTableMultipleDataAssign: true
            });
        });
    </script>

Once you run the application, the report designer will render as shown below:

Report designer

Create dataset

Refer to the Create Data section to create multiple datasets in the report. In this design section, AdventuresWorks database is used.

Add a table to the report

  1. The table report item is listed in the item panel under the Data Regions category. Tablix listed in item panel
  2. Drag and drop the table report item into the design area from the item panel. Drag and drop tablix report item into design area
  3. The respective table properties will be displayed in the properties panel. Tablix item with properties view

Assign data to the tablix

  1. Select any cell within the Tablix data region. Click on the Data assign menu icon to open data assign menu. Data assign menu

  2. The available datasets in the report will be displayed in the dropdown menu of the data assign menu. Data assign dropdown

  3. Select the fields SalesOrderID, ModifiedDate, and OrderQty from DataSet1. The selected fields will be assigned to the corresponding cells, as shown below. First dataset fields assign

  4. Now, choose Dataset2 from the dropdown menu; the respective fields will be listed below. Another dataset fields assign

  5. The fields Name and UnitPrice assigned from DataSet2 will be considered as expressions. Expression data assign

Calculate a item total

To calculate the item total, refer to the Assign expression in cell section and assign the following expression to the last cell: =Fields!OrderQty.Value * First(Fields!UnitPrice.Value, "DataSet2"). Item total

Format tablix design

In the design below, the background color and font styles in the Tablix cells have been updated to enhance the report design. Formatted tablix design

Report preview

In the report preview, the Product Sales Report will be displayed as shown below: Report preview

Download the above report design from this link.