textbox，鼠标 按下光标总是最前面

Question

无法地位到想要的位置
这是为什么比如textbox的内容是abc
鼠标单击文本框，想定位到bc之间
科点击后总是在最前面即a前面
这个怎么办

Answer 1

       设置SelectionStart 属性，例如
        private void textBox1_MouseClick(object sender, MouseEventArgs e)
        {
            textBox1.SelectionStart = 1;
        } 

Answer 2

http://topic.csdn.net/t/20040726/15/3211168.html

Answer 3

谢谢楼上的
可是不是我想要的我现在希望恢复默认的操作
就是在textbox中鼠标点到哪里光标就到哪里

Answer 4

有这两个事件
 public void textBoxEmpty_Validating(object sender, CancelEventArgs e)
        {
            TextBox tb = (TextBox)sender;
            if (tb.Text.Length == 0)
            {
                tb.BackColor = Color.Red;
                tb.Tag = false;
                // e.Cancel = true;
            }
            else
            {
                tb.BackColor = System.Drawing.SystemColors.Window;
                tb.Tag = true;
            }
            validateOK();        }        public void textBox_TextChanged(object sender, EventArgs e)
        {
            TextBox tb = (TextBox)sender;            if (tb.Text.Length == 0)
            {
                tb.BackColor = Color.Red;
                tb.Tag = false;
                //e.Cancel = true;
            }            else
            {
                tb.BackColor = System.Drawing.SystemColors.Window;
                tb.Tag = true;
            }
            validateOK();        }

Answer 5

public void textBoxEmpty_Validating(object sender, CancelEventArgs e) 
        { 
            TextBox tb = (TextBox)sender; 
            if (tb.Text.Length == 0) 
            { 
                tb.BackColor = Color.Red; 
                tb.Tag = false; 
                // e.Cancel = true; 
            } 
            else 
            { 
                tb.BackColor = System.Drawing.SystemColors.Window; 
                tb.Tag = true; 
            } 
            validateOK();         }         public void textBox_TextChanged(object sender, EventArgs e) 
        { 
            TextBox tb = (TextBox)sender;             if (tb.Text.Length == 0) 
            { 
                tb.BackColor = Color.Red; 
                tb.Tag = false; 
                //e.Cancel = true; 
            }             else 
            { 
                tb.BackColor = System.Drawing.SystemColors.Window; 
                tb.Tag = true; 
            } 
            validateOK();         }