EntityDataSource

This help article describes which properties to use to bind the ASP.NET AJAX Chart to an EntityDataSource and presents a code example. You can bind a RadHtmlChart to an EntityDataSource using the following properties:

• DataSourceID in the main tag sets the declarative data source for the entire chart. You can use the DataSource property for a programmatic data source if you create the connection in the code-behind.

• DataFieldY property (and ColorField, ExplodeField, NameField for Pie and Donut; DataFieldX for Bubble, Scatter and ScatterLine; etc.)for the series to point it to the desired data source field.

• DataLabelsField for the x-axis labels to populate the items for the axis.

The data context, used in the following example, is created from the Northwind database.

Example 1: Bind an EntityDataSource to a RadHtmlChart.

ASP.NET

<asp:EntityDataSource ID="EntityDataSource1" runat="server" ConnectionString="name=NorthwindEntities"
	DefaultContainerName="NorthwindEntities" CommandText="select p.ProductName, p.UnitsInStock from NorthwindEntities.Products as p where p.CategoryID = 1">
</asp:EntityDataSource>
<telerik:RadHtmlChart runat="server" ID="RadHtmlChart1" DataSourceID="EntityDataSource1">
	<PlotArea>
		<Series>
			<telerik:BarSeries DataFieldY="UnitsInStock" Name="Drinks">
				<TooltipsAppearance Visible="false" />
			</telerik:BarSeries>
		</Series>
		<XAxis DataLabelsField="ProductName">
			<MinorGridLines Visible="false" />
			<MajorGridLines Visible="false" />
		</XAxis>
		<YAxis>
			<TitleAppearance Text="Units" />
			<MinorGridLines Visible="false" />
		</YAxis>
	</PlotArea>
	<Legend>
		<Appearance Visible="false" />
	</Legend>
	<ChartTitle Text="Units In Stock">
	</ChartTitle>
</telerik:RadHtmlChart>

See Also

• RadHtmlChart Bar Chart

• RadHtmlChart EntityDataSource Demo