hide columns dynamically in rdlc report

Question

How we can hide columns dynamically in rdlc reports in MVC 2?

Is it is possible using external parameters? How we can programmatically control the visibility of columns

Answer 1

Following are the steps to hide the column

1) Add a boolean parameter with name column_visible in your report

2) Right Click on desired column and select Column Visibility.

3) Select the option "show or hide based on an expression"

4) add following formula

= iif(Parameters!column_visible.Value = "True", false,true)

5) Add following code in c# file where you are assigning value to above added parameter

ReportParameter[] parameters = new ReportParameter[1];
if (condition)
{
   parameters[0] = new ReportParameter("column_visible", "True");
}
else
{
 parameters[0] = new ReportParameter("column_visible", "False");
}          
this.reportViewer1.LocalReport.SetParameters(parameters);