We have a winforms application and some of the forms have properties etc.
When viewing certain forms, sometimes the 'ErrorForm' we have created pops up like it would at runtime saying a property has not been initialized, it actually pops up as a window like it would show at runtime
Also I note after some changes to a separate project, namely adding a static class with a static method that returns a connection string. We can no longer view certain user controls as the IDE shows with the following error
| One or more errors encountered while loading the designer. The errors are listed below. Some errors can be fixed by rebuilding your project, while others may require code changes. | |
|
at System.Data.SqlClient.SqlConnection.PermissionDemand() at System.Data.SqlClient.SqlConnectionFactory.PermissionDemand(DbConnection outerConnection) at System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) at System.Data.SqlClient.SqlConnection.Open() at DBDescriptionEditor.SqlHelper.ExecuteDataset(String connectionString, CommandType commandType, String commandText, SqlParameter[] commandParameters) in C:\Source\NPDAAT2007\Development\NPDAAT\Forvus.NPDAAT.DataAccess\SQLHelper.cs:line 428 at DBDescriptionEditor.SqlHelper.ExecuteDataset(String connectionString, CommandType commandType, String commandText) in C:\Source\NPDAAT2007\Development\NPDAAT\Forvus.NPDAAT.DataAccess\SQLHelper.cs:line 407 at Forvus.NPDAAT.DataAccess.ModificationReasonDataManager.GetAllModificationReasons() in C:\Source\NPDAAT2007\Development\NPDAAT\Forvus.NPDAAT.DataAccess\ModificationReasonDataManager.cs:line 16 at Forvus.NPDAAT.Business.ModificationReasonManager.GetAllmodificationReasons() in C:\Source\NPDAAT2007\Development\NPDAAT\Forvus.NPDAAT.Business\ModificationReasonManager.cs:line 20 | |
I have tried to look at the modification reason manager class and there appears to be nothing wrong. The DBDescriptionEditor.SqlHelper.ExecuteDataset has not been changed however we are now passing into it the static method that we created returned string, instead of a hardcoded DB string. After creating this class the problems have started.
Strange behaviour re. the IDE
DineshB
most probably you have code that is executed on Design Time and that code is failing for some reason, for example if you've added code at OnLoad method which is trying to establish a connection or something like this, this code will be executed when the form is showed in Vs.
To avoid that you should check the property DesignMode like this:
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
if (!this.DesignMode)
{
// Do something
}
}
hope it helps
CurtisDeHaven
Well that is indeed the problem. There is a method in the OnLoad that populates a dropdown list by getting values from the database.
I won't put the fix around it I will comment out that line of code at design time so I can still view the form.
Thanks
Gabi M
Thanks
Rolan
Zamial,
Report the bug using http://connect.microsoft.com/
Pablo