Hi, Please try to follow the following steps and debug: 1. Keep a break point on the button click event which opens the form. 2. Once it reaches there debug it line by line and find the exact source of problem. 3. It should be caused because some component is not initialised or set to null in between. 4. When its in debug mode press Ctrl + Alt + E and select the 2nd and third option. It will usually detect the null reference exceptions.
If none of these work then try to share the code. I will probably have a look. Regards, Nikhil On Wed, Feb 18, 2009 at 6:35 PM, Cerebrus <[email protected]> wrote: > > 1. Does the form use any custom or usercontrols that possibly have > compilation errors ? > 2. If the form has DataGridViews, has the binding source or data > source changed ? > > If you're trying to open the form in design mode, you will often > encounter such an error if there is a fatal error while trying to > render one of the form components. Trying removing the components one > by one from the Designer.(vb/cs) file and then open the code file and > check for errors. > > On Feb 18, 4:40 pm, Laura <[email protected]> wrote: > > Hi, I keep getting the following error when I run my project and click > > on the button that opens frmAbsentees; > > > > "An error occurred creating the form. See Exception.InnerException for > > details. The error is: Object reference not set to an instance of an > > object." > > > > I don't get this error opening any other form. I've deleted the form > > several times and recreated it but this error keeps showing up. > > > > I've created other forms since and they work fine. > > > > I don't understand this error. As soon as I put some bit of code > > behind the form the error comes up. > > > > I was getting this error last weekend aswell on another form but once > > I deleted it and made from scratch again, it was fine. > > > > This error only really came about since I started dealing with > > datagridviews, if that has anything to do with it?? > > > > I can show you code if you want but I think its something more than > > that. > > > > Does anyone know what's going on? > > Any suggestions??
