title: Character constant must contain exactly one character
body: <p>When you get this error "<strong>Character constant must contain exactly one character</strong>"</p>
  
  <p>I had this code but it constant gave me the above error in my LinqDataSource:</p>
  
  <pre><code> &lt;asp:LinqDataSource ID="LinqViewLogs" runat="server" 
      ContextTypeName="ScanFakDataContext" OrderBy="Dato desc" 
      TableName="ViewLogs" 
          Where="(@Filter='' OR (@Filter='UserNotes' AND LogType=1)"&gt;
       &lt;WhereParameters&gt;
           &lt;asp:QueryStringParameter DbType="String" DefaultValue="" Name="Filter" QueryStringField="Filter" /&gt;
       &lt;/WhereParameters&gt;
  &lt;/asp:LinqDataSource&gt;
  </code></pre>