ValidationError Class
Represents the base class for all validation errors.
Assembly: System.Workflow.ComponentModel (in System.Workflow.ComponentModel.dll)
The following example shows how to create and manipulate validation errors as part of a custom validation routine.
This code example is part of the Send Mail SDK Sample and is from the SendEMailActivity.cs file. For more information, see Send Mail Activity.
private void ValidateEmailProperties(ValidationErrorCollection validationErrors, SendEmailActivity activity) { // Validate the To property if (String.IsNullOrEmpty(activity.To)) { validationErrors.Add(ValidationError.GetNotSetValidationError(SendEmailActivity.ToProperty.Name)); } else if (!activity.To.Contains("@")) { validationErrors.Add(new ValidationError("Invalid To e-mail address", InvalidToAddress, false, SendEmailActivity.ToProperty.Name)); } // Validate the From property if (String.IsNullOrEmpty(activity.From)) { validationErrors.Add(ValidationError.GetNotSetValidationError(SendEmailActivity.FromProperty.Name)); } else if (!activity.From.Contains("@")) { validationErrors.Add(new ValidationError("Invalid From e-mail address", InvalidFromAddress, false, SendEmailActivity.FromProperty.Name)); } }
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
