//初始化控件
System.Windows.Forms.ToolTip toolTip = new System.Windows.Forms.ToolTip();
//赋值
toolTip.SetToolTip(this.button1."按钮控件");
//初始化控件
System.Windows.Forms.ToolTip toolTip = new System.Windows.Forms.ToolTip();
//赋值
toolTip.SetToolTip(this.button1."按钮控件");