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resources Windows Server 2012 resources Programs MSDN subscriptions Overview Benefits Administrators Students Microsoft Imagine Microsoft Student Partners ISV Startups TechRewards Events Community Magazine Forums Blogs Channel 9 Documentation APIs and reference Dev centers Retired content Samples We’re sorry. The content error icon 16x16 you requested has been removed. You’ll be auto redirected in 1 second. Windows Forms Controls error icon bootstrap Controls to Use on Windows Forms ErrorProvider Component ErrorProvider Component How to: Display Error Icons for Form Validation with the Windows
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Forms ErrorProvider Component How to: Display Error Icons for Form Validation with the Windows Forms ErrorProvider Component How to: Display Error Icons for Form Validation with the Windows Forms ErrorProvider Component ErrorProvider Component Overview How to:
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Display Error Icons for Form Validation with the Windows Forms ErrorProvider Component How to: View Errors Within a DataSet with the Windows Forms ErrorProvider Component TOC Collapse the table of content Expand the table of content This documentation is archived and is not being maintained. This documentation is archived and is not being maintained. How to: Display Error Icons for Form Validation with the Windows Forms ErrorProvider Component .NET Framework (current error image icon version) Other Versions Visual Studio 2010 .NET Framework 3.5 .NET Framework 3.0 .NET Framework 2.0 You can use a Windows Forms ErrorProvider component to display an error icon when the user enters invalid data. You must have at least two controls on the form in order to tab between them and thereby invoke the validation code.To display an error icon when a control's value is invalidAdd two controls — for example, text boxes — to a Windows Form. Add an ErrorProvider component to the form.Select the first control and add code to its Validating event handler. In order for this code to run properly, the procedure must be connected to the event. For more information, see How to: Create Event Handlers at Run Time for Windows Forms. The following code tests the validity of the data the user has entered; if the data is invalid, the SetError method is called. The first argument of the SetError method specifies which control to display the icon next to. The second argument is the error text to display. C#C++VB Copy protected void textBox1_Validating (object sender, System.ComponentModel.CancelEventArgs e) { try { int x = Int32.Parse(textBox1.Text); errorProvider1.SetError(textBox1, ""); } catch (Exception ex) { errorProvider1.SetError(textBox1, "Not an integer value."); } } (Visual C#, Visual C++) Place the following
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Learn more about Stack Overflow the company Business Learn more about hiring developers error icon gif or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack error icon svg Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up How can a standard error icon be https://msdn.microsoft.com/en-us/library/f6xht7x2(v=vs.110).aspx shown in on a C# windows forms dialog? up vote 7 down vote favorite 2 I'd like to use the standard error icon (Standard Icons) on a Windows Forms dialog. How can the error icon be loaded into an Image for display? c# winforms share|improve this question asked Feb 1 '11 at 21:55 Jonathan Wright 5,76731517 add a comment| 2 Answers 2 active oldest votes up vote http://stackoverflow.com/questions/4868402/how-can-a-standard-error-icon-be-shown-in-on-a-c-sharp-windows-forms-dialog 17 down vote accepted By using Icon.ToBitmap() Bitmap b = SystemIcons.Error.ToBitmap(); EDIT: Three years later and one more upvote, I feel compelled to direct people who just want to draw the icon to a graphics object to read the answer by @Hans Passant. It's a better solution. share|improve this answer edited Jun 20 '14 at 1:09 answered Feb 1 '11 at 22:02 Ed S. 86.3k13131198 As a side note, this requires .NET 3.5 or later. –Evan Mulawski Feb 1 '11 at 22:05 @Evan: That's not true msdn.microsoft.com/en-US/library/… –Ed S. Feb 1 '11 at 22:08 That is easier than expected. Thanks. –Jonathan Wright Feb 1 '11 at 22:08 And msdn.microsoft.com/en-us/library/… has been there since 1.0. –Jonathan Wright Feb 1 '11 at 22:10 @Ed: True. Only the Shield icon requires 3.5 or later. –Evan Mulawski Feb 1 '11 at 22:17 | show 1 more comment up vote 6 down vote I have to sputter at the horrid waste of burning up such expensive resources as a Control and a Windows window, just to draw a dinky icon. To save one line of code: protected override void OnPaint(PaintEventArgs e) { e.Graphics.DrawIcon(SystemIcons.Error, 1
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