本文整理匯總了C#中System.Windows.Forms.ComboBox.DropDown事件的典型用法代碼示例。如果您正苦於以下問題：C# ComboBox.DropDown事件的具體用法？C# ComboBox.DropDown怎麽用？C# ComboBox.DropDown使用的例子？那麽, 這裏精選的事件代碼示例或許可以為您提供幫助。您也可以進一步了解該事件所在類System.Windows.Forms.ComboBox的用法示例。
在下文中一共展示了ComboBox.DropDown事件的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的C#代碼示例。
示例1: InitializeComboBox
// Declare ComboBox1.
internal System.Windows.Forms.ComboBox ComboBox1;
// Initialize ComboBox1.
private void InitializeComboBox()
{
this.ComboBox1 = new ComboBox();
this.ComboBox1.Location = new System.Drawing.Point(128, 48);
this.ComboBox1.Name = "ComboBox1";
this.ComboBox1.Size = new System.Drawing.Size(100, 21);
this.ComboBox1.TabIndex = 0;
this.ComboBox1.Text = "Typical";
string[] installs = new string[]{"Typical", "Compact", "Custom"};
ComboBox1.Items.AddRange(installs);
this.Controls.Add(this.ComboBox1);
// Hook up the event handler.
this.ComboBox1.DropDown +=
new System.EventHandler(ComboBox1_DropDown);
}
// Handles the ComboBox1 DropDown event. If the user expands the
// drop-down box, a message box will appear, recommending the
// typical installation.
private void ComboBox1_DropDown(object sender, System.EventArgs e)
{
MessageBox.Show("Typical installation is strongly recommended.",
"Install information", MessageBoxButtons.OK,
MessageBoxIcon.Information);
}