How to avoid thus CS0266: Cannot implicitly convert type 'Sy

Hi creating crystal report in c# asp.net using Dataset and created datatable (column what are column i need to display ) i developed three tier architecture,

when i post value to datatable i got the below error ,

CS0266: Cannot implicitly convert type 'System.Data.DataSet' to 'DataSet1'. An explicit conversion exists (are you missing a cast?) 

 

code :

 

dsReport = BindData("ViewId", WorforceId);

 

Stored procedure :"ViewId

WorforceID to send where condition;

 

thanks and regrads

Venkat