Passing MS CRM 2011 CRMParameter from ribbon button to Silverlight application

It’s pretty cool when you can pass CRMParameters to Silverlight application. To do that we need to get “location” :

public static string GetCRMParametr()
{
     if (HtmlPage.IsEnabled)
    {
        dynamic location = (ScriptObject)HtmlPage.Window.GetProperty("location");
        string crmParametr = location.search;
        if(!string.IsNullOrEmpty(crmParametr))
       {
           return crmParametr
        }
    }

return null;
}

You can add some kind of dummy parser to extract guid’s from passed parameters:


public static List<Guid> GetCRMParametr()
{
     List<Guid> guidsParameters = new List<Guid>();

     if (HtmlPage.IsEnabled)
     {
        dynamic location = (ScriptObject)HtmlPage.Window.GetProperty("location");
        string crmParametr = location.search;
        if(!string.IsNullOrEmpty(crmParametr))
        {
              var delimeters = new char[] {'&','='};
              var splitedParameters = crmParametr.Split(delimeters, StringSplitOptions.None);
              if (splitedParameters[0] == "?Data" && splitedParameters[1] != string.Empty)
             {
                  splitedParameters[1] = splitedParameters[1].Replace("%7d%2c%7b", "*").Replace("%7d", " ").Replace("%7b", " ");
                  var guids = splitedParameters[1].Split('*');
                  guidsParameters.AddRange(guids.Select(Guid.Parse));
                  return guidsParameters;
              }
          }
       }
    return null;
}

Don’t forget to add CRMParameter to your ribbon button:

<CommandDefinition Id="Mscrm.SubGrid.steer_course_partisipant.RunResultsCommand">
     <EnableRules></EnableRules>
     <DisplayRules></DisplayRules>
     <Actions>
        <Url Address="$webresource:steer_ParticipantsResults.htm" PassParams="true" WinParams="height=200, width=420, toolbar=no, resizable=no" WinMode="0">
           <CrmParameter Name="Data" Value="SelectedControlSelectedItemIds" />
        </Url>
     </Actions>
</CommandDefinition>

Now you can play with this sample, for example you can try Regular expression to parse CRMParameter data. It’s up to you. :)