listbox删除选中项_panel有什么作用_dialogresult.ok

点击某个按钮后，使得取值为OK,或才Yes，哪么，就要给该按钮行为中的DialogResult赋值。[喝小酒的网摘]

button1.DialogResult = DialogResult.OK;

当然也可以在设计模式时指定。具体的取值如下所示：

None Nothing is returned from the dialog box. This means that the modal dialog continues running.

OK The dialog box return value is OK (usually sent from a button labeled OK).

Cancel The dialog box return value is Cancel (usually sent from a button labeled Cancel).

Abort The dialog box return value is Abort (usually sent from a button labeled Abort).

Retry The dialog box return value is Retry (usually sent from a button labeled Retry).

Ignore The dialog box return value is Ignore (usually sent from a button labeled Ignore).

Yes The dialog box return value is Yes (usually sent from a button labeled Yes).

No The dialog box return value is No (usually sent from a button labeled No).

示例：

private void validateUserEntry5()

{

// Checks the value of the text.

if(serverName.Text.Length == 0) {

// Initializes the variables to pass to the MessageBox.Show method.

string message = "You did not enter a server name. Cancel this operation?";

string caption = "No Server Name Specified";

MessageBoxButtons buttons = MessageBoxButtons.YesNo;

DialogResult result;

// Displays the MessageBox.

result = MessageBox.Show(this, message, caption, buttons);

if(result == DialogResult.Yes)

{

// Closes the parent form.

this.Close();

}

}

}

Winform里不专门区别对话框和窗口。

调用窗口的ShowDialog()方法就是以模态方式显示；调用Show()显示就是非模态的。

大概调用模式是这样：

Form1 frm = new Form1();

if (frm.ShowDialog(this)

== System.Windows.Forms.DialogResult.OK) // 如果选择了"确定"

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