C#：文本框textbox焦点事件

Form.Designer.cs//// tb_password1//this.tb_password1.Location = new System.Drawing.Point(304, 149);this.tb_password1.Margin = new System.Windows.Forms.Padding(4);this.tb_password1.Name = \"tb_password1\";this.tb_password1.Size = new System.Drawing.Size(348, 28);this.tb_password1.TabIndex = 3;this.tb_password1.Enter += new System.EventHandler(this.tb_password1_Enter); //获取焦点this.tb_password1.Leave += new System.EventHandler(this.tb_password1_Leave); //失去焦点

Form.csprivate void tb_password1_Enter(object sender, EventArgs e){}private void tb_password1_Leave(object sender, EventArgs e){}