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I am currently writing a WinForms application in C# with a Microsoft Access database backend and using Crystal Reports for reporting.
One table in the database contains a numeric field which can allow any numeric value including zero, but is can also be Null. Currently when I display a report any field that contains a zero value is displayed as empty. I have played around with the "Show zero as" setting but it is either blank for both zero and Null values or it shows "0" for both zero and Null values.
I would like to display "0" for zero values and "" for Null values.
OK, I think I've found a workaround to fix the problem. I modified the SQL SELECT statement using the ISNULL function to replace Null values with a large negative number (NOTE: users are limited to entering only positive numbers or small negative numbers in these fields. I then used CR conditional formatting to make these large negative numbers invisible (white foreground/background).
I know this does not answer your original question about zeros/nulls w/Crystal Reports, but I could not overlook an opportunity to "try" and convince someone not to use MS Access....for anything, ever.
My recommendation is to port over the general table schema and data from MS Access into an SQL Server database, then you are only stuck with the nightmare that is Crystal reports.
so, i was doing some programming with eclipse and stuff. But then i noticed that all of my .JAR files suddenly looked like a pinguin with some painting stuff on his hands. i need help, cause im not sure what is going on!! I use windows.
[SOLVED] I had to right click a JAR file, and "press open in application" then select Java JDK. For some reason i had two of those...
I’m writing a new WinForms app (C#, .Net Core, Visual Studio 2019 Preview). The App was intended to take the form of an MDI Parent container with multiple MDI Child forms; however, I need to allow some of the child forms to leave the MDI Parent container and display on a second or third monitor. I really like the way that Visual Studio does this, the way it allows you to dock a pane within the main container but also allows you to drag panes out of the main container to show on a secondary monitor. Is that possible with an MDI parent/child scenario (I suspect not)? If not, what would be the best way to achieve it?
Working with a DataGridView and a custom control: Is it at all possible for an array to be a parameter in a custom control? The high and low limits for every cell in the grid may be different. It would be nice to have this 3 dimensional array to be part of the parameters.
I have read articles that say that it is not possible to have any array to be a parameter in a control. They suggest forgetting DataGridView and doing something like an array of textbox. The grids in the app are always a fixed size and never use scroll bars.
So many years of programming I have forgotten more languages than I know.