As long as you are not waiting for the post-back to do the work. Every post-back to the form is a new instance (ASP.NET please correct me if I am wrong!). This is what I have observed in my testing. You could store it in session state or keep it a static, but as a static, you will be using the same DataSet for every user.
Thanks, Shawn Wildermuth [EMAIL PROTECTED] > -----Original Message----- > From: dotnet discussion [mailto:[EMAIL PROTECTED]] > On Behalf Of Karen Healey > Sent: Wednesday, May 29, 2002 5:50 PM > To: [EMAIL PROTECTED] > Subject: Re: [DOTNET] why does DataSet have to be static meber > > > I'm sure the methods are executing in the correct order. But > I'm not sure about it being the same instance. It seems to > me it should be the same instance but I'm new to this. > > I have a multi-panel form (similating multiple pages). At > the bottom of one of the last panels made visible, I have a > finish button. In the FinishButton_Click method, the current > panel is hidden, another panel is made visible and the data > set is built using the data member, dstMaster. Then the user > is at the new panel and this panel has a submit button (the > finish button is no longer visible). When the user clicks on > the submit button, the SubmitButton_Click method tries to > access dstMaster and its empty. Seems like it goes away as > soon as the code exits the FinishButton_Click method. > > So, since this is all one form and no other forms are brought > up (just a bunch of panels hidden/made visible) then it > should be the same instance, right? > > Thanks, > > Karen Healey > [EMAIL PROTECTED] > > ----- Original Message ----- > From: "Ian Griffiths" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Wednesday, May 29, 2002 16:38 > Subject: Re: [DOTNET] why does DataSet have to be static meber > > > > I have never had any problems using DataSets as non-static > members. I > > suspect that something slightly more subtle is going wrong. > Are you > > absolutely sure that (a) the methods are executing in the order you > > think they are and (b) that they are actually executing on the same > > instance > both > > times? > > > > > > -- > > Ian Griffiths > > DevelopMentor > > > > ----- Original Message ----- > > From: "Karen Healey" <[EMAIL PROTECTED]> > > > > > I've created a class in C# with a DataSet data member > declared like > this: > > > > > > private DataSet dstMaster; > > > > > > I have a method that builds it by concatenating three datasets > > > together like this: > > > > > > dstMaster = dstOrg.Copy(); > > > dstMaster.Merge( dstContact ); > > > dstMaster.Merge( dstFunding ); > > > > > > In a SEPARATE method, I try to access the contents of the dataset > > > but it is empty! > > > > > > If I declare the dataset as static, I don't have this problem. I > > > don't understand why this is necessary. > > > > > > If someone could explain this to me it would be appreciated. > > > > You can read messages from the DOTNET archive, unsubscribe from > > DOTNET, or subscribe to other DevelopMentor lists at > > http://discuss.develop.com. > > > > You can read messages from the DOTNET archive, unsubscribe > from DOTNET, or subscribe to other DevelopMentor lists at > http://discuss.develop.com. > You can read messages from the DOTNET archive, unsubscribe from DOTNET, or subscribe to other DevelopMentor lists at http://discuss.develop.com.
