在 winform 中验证控件（使用 Devexpress）答案

【问题标题】：Validate controls in winform (with Devexpress)在 winform 中验证控件（使用 Devexpress）
【发布时间】：2012-09-06 10:32:56
【问题描述】：

我在 .NET 和 DevExpress 3rd Party Components 中使用 WinForms。如何验证一个Form中多个组件的数据，并以自定义的方式汇总？

【问题讨论】：

这个问题似乎很笼统。你试过什么？

标签： .net winforms validation devexpress

【解决方案1】：

试试这个代码：

using DevExpress.XtraEditors.DXErrorProvider;

// ...
ConditionValidationRule containsValidationRule = new ConditionValidationRule();
containsValidationRule.ConditionOperator = ConditionOperator.Contains;
containsValidationRule.Value1 = '@';
containsValidationRule.ErrorText = "Please enter a valid email";
containsValidationRule.ErrorType = ErrorType.Warning;

CompareAgainstControlValidationRule compValidationRule = 
    new CompareAgainstControlValidationRule();
compValidationRule.Control = notEmptyTextEdit;
compValidationRule.CompareControlOperator = CompareControlOperator.Equals;
compValidationRule.ErrorText = "Please enter a value that equals to the first editor's value";
compValidationRule.CaseSensitive = true;

CustomValidationRule customValidationRule = new CustomValidationRule();
customValidationRule.ErrorText = "Please enter a valid person name";
customValidationRule.ErrorType = ErrorType.Warning;

dxValidationProvider1.SetValidationRule(containsTextEdit, containsValidationRule);
dxValidationProvider1.SetValidationRule(compareTextEdit, compValidationRule);
dxValidationProvider1.SetValidationRule(customTextEdit, customValidationRule);

// Represents a custom validation rule.
public class CustomValidationRule : ValidationRule {
    public override bool Validate(Control control, object value) {
        string str = (string)value;
        string[] values = new string[] { "Dr.", "Mr.", "Mrs.", "Miss", "Ms." };
        bool res = false;
        foreach(string val in values) {
            if(ValidationHelper.Validate(str, ConditionOperator.BeginsWith, 
                val, null, null, false)) {
                string name = str.Substring(val.Length);
                if(name.Trim().Length > 0) res = true;
            }
        }
        return res;
    }
}

来源：http://documentation.devexpress.com/#WindowsForms/CustomDocument9481

【讨论】：