title: Create Reporting with Dataset C#
body: <p>I'm trying to create a report, but always when I execute the report I get &quot;Missing value for parameter 'Col1'&quot;. Anyone could help me, it's my first time to create a report.</p>
  <p>Here is my datatable:</p>
  <pre><code>DataTable dt = new DataTable(&quot;NewDataTable&quot;);
  dt.Columns.Add(&quot;Col1&quot;);
  dt.Columns.Add(&quot;Col2&quot;);
  dt.Rows.Add(&quot;Row1 Col1&quot;,&quot;Row1 Col2&quot;);
  dt.Rows.Add(&quot;Row2 Col1&quot;,&quot;Row2 Col2&quot;);
  </code></pre>
  <p>Here is my report code:</p>
  <pre><code>reportViewer1.Reset();
  reportViewer1.LocalReport.ReportPath = @&quot;D:\Report\Report1.rdlc&quot;;
  ReportDataSource rds = new ReportDataSource(&quot;NewDataSet&quot;, dt);
  reportViewer1.LocalReport.DataSources.Clear();
  reportViewer1.LocalReport.DataSources.Add(rds);
  reportViewer1.RefreshReport();
  </code></pre>
  <p>Here is my report design:</p>
  <p><img src="https://i.stack.imgur.com/cIuy7.png" alt="enter image description here" /></p>
  <p>Col1 and Col2 type is Text</p>
  <p>Thanks !</p>