Server Error in '/' Application.
Object reference not set to an instance of an object.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
Source Error:
Line 19:
Line 20: DataView DV = (DataView)ChUserDataSource.Select(DataSourceSelectArguments.Empty);
Line 21: if (DV.Count != 0)
Line 22: {
Line 23: DataRowView DRV = DV[0];
Source File: d:websitesGradSurveywwwrootLogin4GradP-I.aspx.cs Line: 21
Stack Trace:
[NullReferenceException: Object reference not set to an instance of an object.]
Login4GradP_I.ASPxBtnOk_Click(Object sender, EventArgs e) in d:websitesGradSurveywwwrootLogin4GradP-I.aspx.cs:21
DevExpress.Web.ASPxEditors.ASPxButton.OnClick(EventArgs e) +170
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3803
Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.34274