title: Parameter validation failed. It is not possible to provide valid values for all parameters. (rsParameterError) SSRS 2008
body: <p>I am passing the parameter from aspx page to report server and getting this exception. Here is my code to set the report parameters.</p>
  
  <pre><code>ReportViewer1.ServerReport.ReportServerUrl = new Uri("http://zeeshankhatri-p/ReportServer_MSSQLSERVER2012");
  ReportViewer1.ServerReport.ReportPath = "/DBAReporting/Clients";
  
  ReportParameter p = new ReportParameter();
  p.Name = "clientName";
  p.Values.Add("Bank Alfalah");
  
  ReportViewer1.ServerReport.SetParameters(p);
  </code></pre>
  
  <h2>here are Parameter Properties:</h2>
  
  <p>Select Parameter Visibility = Internal</p>
  
  <p>Allow Blank Value = checked</p>
  
  <p>Allow null Value = checked</p>
  
  <p>Available Values = None</p>
  
  <p>Default Values = No default value</p>
  
  <h2>DataSet Properties:</h2>
  
  <p>Query:</p>
  
  <p>Query Type = Stored Procedure</p>
  
  <p>Parameters: </p>
  
  <p>Parameter Name = @clientName</p>
  
  <p>Parameter Value = [@clientName]</p>
  
  <p>Can you please suggest what i did wrong in my case.?</p>