<div>
in the code behind you can try the following code as below<br />
<br />
reportViewer.LocalReport.D<wbr />ataSources<wbr />.Clear();<br />
reportViewer.LocalReport.D<wbr />ataSources<wbr />.Add(new ReportDataSource(&quot;datasour<wbr />cename&quot;, source));<br />
<br />
&quot;datasourcename&quot; is the name of the data source, you can find it .rdlc file. <br />
source is the variable with data you want to show in the report. <br />
<br />
hope this helps.
</div>


in the code behind you can try the following code as below

reportViewer.LocalReport.DataSources.Clear();
reportViewer.LocalReport.DataSources.Add(new ReportDataSource("datasourcename", source));

"datasourcename" is the name of the data source, you can find it .rdlc file.
source is the variable with data you want to show in the report.

hope this helps.

<div>
Hi Jitendra, thank you for replying.<br />
So in my .rdlc file, <br />
my Data Source is called: &nbsp;&quot;RF&quot; <br />
and<br />
my dataset is called dsSalesDelta<br />
So would would the arguments in new ReportDataSource look like this?<br />
<br />

<pre><code id="code-20-40317298-1">reportViewer.LocalReport.DataSources.Add(new ReportDataSource(&quot;RF&quot;, dsSalesDelta));</code></pre>
</div>


Hi Jitendra, thank you for replying.
So in my .rdlc file,
my Data Source is called:  "RF"
and
my dataset is called dsSalesDelta
So would would the arguments in new ReportDataSource look like this?



reportViewer.LocalReport.DataSources.Add(new ReportDataSource("RF", dsSalesDelta));

<div>
<div class="content wysiwyg-content">
Hi, how can I change the &lt;rsweb:ReportDataSource DataSourceId= property of a report viewer control from <br />
ObjectDataSource1 to ObjectDataSource2?
</div>
</div>


Hi, how can I change the <rsweb:ReportDataSource DataSourceId= property of a report viewer control from 
ObjectDataSource1 to ObjectDataSource2?

Change datasource for report viewer control programatically

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