This article has been archived. It is offered "as is" and will no longer be updated.
When you load very large files in the RichTextBox control, you may receive a System.OutOfMemoryException error message when you access the text through the RTF property of the control. An example use of the RTF property is demonstrated in the following source code:
Dim sTemp As StringsTemp = RichTextBox1.Rtf
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.
To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:
Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.
The English version of this hotfix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.
Date Time Version Size File name--------------------------------------------------------------14-Aug-2003 02:23 1.1.4322.934 77,824 Corperfmonext.dll14-Aug-2003 02:20 1.1.4322.934 311,296 Mscorjit.dll14-Aug-2003 02:12 1.1.4322.934 2,093,056 Mscorlib.dll14-Aug-2003 02:21 1.1.4322.934 2,498,560 Mscorsvr.dll14-Aug-2003 02:22 1.1.4322.934 2,486,272 Mscorwks.dll
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.
The problem is not limited to the RichTextBox control. The problem may also occur with certain large memory allocations. For example, the following code also results in an "Out of memory" exception error message:
byte arr = new byte;
To work around this problem, add a single byte to this allocation.