masktextbox IP控件

ip控件

添加事件

代码语言：javascript复制

            maskedTextBox1.KeyPress  = MaskedTextBox_KeyPress;
            maskedTextBox2.KeyPress  = MaskedTextBox_KeyPress;
            maskedTextBox3.KeyPress  = MaskedTextBox_KeyPress;
             private void MaskedTextBox_KeyPress(object sender, KeyPressEventArgs e)
        {
            MaskedTextBox texBox = sender as MaskedTextBox;
            int ret = SetValidData(texBox, texBox.SelectionStart, e.KeyChar);
            texBox.SelectionStart = ret;
        }

设置光标位置函数

代码语言：javascript复制

private int SetValidData(MaskedTextBox textBox,int start,char input)
        {
            try
            {
                string text = textBox.Text.PadRight(15),ipText = text;
                if (input >= '0' && input <= '9')
                {
                    //ipText = ipText.Remove(start - 1);
                    ipText = ipText.Insert(start, input.ToString());
                }
                int index 

汇编语言

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