Validate Crystal report dataset is changed or not using c# c

I'm using crystal report, when I changed my data set i want to validate the data set is changed or not. For example I can manually right clicks the report's dataset then I can click "Verify Database". It will say "The databse is up to date". Same action I want to perform using c# code.

 

and I using the below code

 

// Apply the connection information to the report tables

CrystalDecisions.CrystalReports.Engine.Tables tblsRpt = rptDoc.Database.Tables;

for(int i = 0; i < tblsTRpt.Count; i++)

{

CrystalDecisions.CrystalReports.Engine.Table tblRpt = tblsRpt[i];

CrystalDecisions.Shared.TableLogOnInfo infoTbl = tblRpt.LogOnInfo;

infoTbl.ConnectionInfo = conRpt;

tblRpt.ApplyLogOnInfo(infoTbl);

}

 

but it will take more time. I don't want loop through the dataset because of I've lot the crystal reports and sub report also.

 

So Please suggest If there is any way to validate the data set using c# code