C#实现文本框内的tab键作用

代码如下:

 //
            // textBox1
            //
            this.textBox1.Location = new System.Drawing.Point(12, 39);
            this.textBox1.Multiline = true;
            this.textBox1.Name = "textBox1";
            this.textBox1.Size = new System.Drawing.Size(504, 352);
            this.textBox1.TabIndex = 1;
            this.textBox1.TabStop = false;