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如何以编程方式为所有控件设置ErrorProvider图标

errorprovider winforms c#

Kevin Vaughan · 技术社区 · 16 年前

我们使用派生形式类,一个基本形式类用于我们的软件。

设置图标对齐的代码:

private void SetErrorProviderIconAlignment(ErrorProvider errorProvider, Control control)
{
    errorProvider.SetIconAlignment(control, ErrorIconAlignment.MiddleLeft);

    foreach (Control subControl in control.Controls)
    {
        SetErrorProviderIcon(errorProvider, subControl);
    }
}

1 回复 | 直到 16 年前

pb2q 13 年前

我们用的是遗传的 ErrorProvider 而是强制设置/返回IconAlignment扩展属性的默认值的组件。

例如。

[ToolboxBitmap(typeof(ErrorProvider))]
[ProvideProperty("IconAlignment", typeof(Control))]
public class MyErrorProvider : ErrorProvider
{
    #region Base functionality overrides

    // We need to have a default that is explicitly different to 
    // what we actually want so that the designer generates calls
    // to our SetIconAlignment method so that we can then change
    // the base value. If the base class made the GetIconAlignment
    // method virtual we wouldn't have to waste our time.
    [DefaultValue(ErrorIconAlignment.MiddleRight)]
    public new ErrorIconAlignment GetIconAlignment(Control control)
    {
        return ErrorIconAlignment.MiddleLeft;
    }

    public new void SetIconAlignment(Control control, ErrorIconAlignment value)
    {
        base.SetIconAlignment(control, ErrorIconAlignment.MiddleLeft);
    }

    #endregion
}

new ErrorProvider() 并替换为 new MyErrorProvider() .

SetIconAlignment 在 form.designer.cs 文件夹。。。