please help me

i have doubt about how to show the text box value into the crystal report..

in my project i need to show the log in name in the crystal report..  i had created the parameters and assigned the discrete values but when am executing the application discrete value wizard will be appear on the screen.. please help me how to solve this problem and how to show the text box value  into the crystal report  

this is my source code

 paramField = new ParameterField();  
          paramDiscreteValue = new ParameterDiscreteValue();  
          paramField.Name = "uname";
          paramDiscreteValue.Value = uname;<-- this is the log in name
          paramField.CurrentValues.Add(paramDiscreteValue);
          paramFields.Add(paramField);

please send me reply how to show the text box value in crystal report