C#自定义无边框MessageBox窗体

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本例子中制作一个无边框的MessageBox窗体

展示效果：

窗体设计

1.添加一个窗体继承原生Form

public partial class MessageBoxEX : Form

2.属性添加

private string _titleText = "提示"; public string TitleText
{
get { return _titleText; }
set { _titleText = value; }
} private string _contentText = "暂无信息!"; public string ContentText
{
get { return _contentText; }
set { _contentText = value; }
}

3.事件添加

/// <summary>
/// 窗体load的时候讲文本赋值给消息框
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void MessageBoxEX_Load(object sender, EventArgs e)
{
if (this._contentText.Trim() != "")
{
this.lblTitalContent.Text = this._titleText;
this.lblMessage.Text = this._contentText;
}
}
/// <summary>
/// 鼠标按下标题栏移动窗体
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void lblTitleBar_MouseDown(object sender, MouseEventArgs e)
{
//为当前的应用程序释放鼠标捕获
ReleaseCapture();
//发送消息﹐让系統误以为在标题栏上按下鼠标
SendMessage((int)this.Handle, WM_NCLBUTTONDOWN, HTCAPTION, );
} /// <summary>
/// 关闭按钮
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnClose_Click(object sender, EventArgs e)
{
this.DialogResult = System.Windows.Forms.DialogResult.Cancel;
} /// <summary>
/// 确定按钮事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnOK_Click(object sender, EventArgs e)
{
this.DialogResult = System.Windows.Forms.DialogResult.OK;
} /// <summary>
/// 取消按钮
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnCancel_Click(object sender, EventArgs e)
{
this.DialogResult = System.Windows.Forms.DialogResult.Cancel;
}

4.对外公共方法show设计这里只填写俩个（有需要可以自行修改）

public static DialogResult Show(string text)
{
MessageBoxEX msgbox = new MessageBoxEX(text);
return msgbox.ShowDialog();
} public static DialogResult Show(string title,string text)
{
MessageBoxEX msgbox = new MessageBoxEX(title,text);
return msgbox.ShowDialog();
}

5.添加单击窗体标题栏移动窗体

[DllImport("user32.dll", EntryPoint = "SendMessageA")]
private static extern int SendMessage(int hwnd, int wMsg, int wParam, int lParam); [DllImport("user32.dll")]
private static extern int ReleaseCapture(); private const int WM_NCLBUTTONDOWN = 0XA1; //.定义鼠標左鍵按下
private const int HTCAPTION = ;

private void lblTitleBar_MouseDown(object sender, MouseEventArgs e)
{
//为当前的应用程序释放鼠标捕获
ReleaseCapture();
//发送消息﹐让系統误以为在标题栏上按下鼠标
SendMessage((int)this.Handle, WM_NCLBUTTONDOWN, HTCAPTION, );
}

正文

C#自定义无边框MessageBox窗体