Question

Is it possible to set the connection string of crystal report from the properties.settings of a winform in c# like the following?

this is just my assumptions

rpt.connectionString = Properties.Settings.Default.ConnectionString

Answer 1

This is my code for managing logins/connectionstrings (dbLogin is just a simple class for storing information, you can replace that with string values).

    //Somewhere in my code:
    foreach (CrystalDecisions.CrystalReports.Engine.Table tbCurrent in rdCurrent.Database.Tables)
        SetTableLogin(tbCurrent);


    //My set login method 
    private void SetTableLogin(CrystalDecisions.CrystalReports.Engine.Table table)
    {
        CrystalDecisions.Shared.TableLogOnInfo tliCurrent = table.LogOnInfo;

        tliCurrent.ConnectionInfo.UserID = dbLogin.Username;
        tliCurrent.ConnectionInfo.Password = dbLogin.Password;
        if(dbLogin.Database != null)
            tliCurrent.ConnectionInfo.DatabaseName = dbLogin.Database; //Database is not needed for Oracle & MS Access
        if(dbLogin.Server != null)
            tliCurrent.ConnectionInfo.ServerName = dbLogin.Server;
        table.ApplyLogOnInfo(tliCurrent);
    }