C# Sleep Routine

int i = 0;
string retVal = "";
string sSQL2 = "EXEC dbo.isJobRunning2 'TSI_PlugX';";
//string sSQL2 = "EXEC dbo.isJobRunning2 'TSI_Plug';";
while (i == 0)
{
retVal = DataUtilities.utilSQL.DBExecScalarString(sSQL2, "TSI");
tOut.Text += retVal;
if (retVal == "0")
{
break;
}
else
{
System.Threading.Thread.Sleep(1000);
}
}