CHeckbox的选中与取消事件，存入VIEWSTATE以后调用

CF西西

于 2011-08-03 14:18:59 发布

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CC 4.0 BY-SA版权

文章标签： textbox string null object

本文链接：https://blog.youkuaiyun.com/xiaoguang44/article/details/6656790

本文介绍了一个用于切换密码显示状态的功能实现方法。通过监听密码显示复选框的状态改变事件，动态调整密码输入框的显示模式，并根据需要加密或解密密码。

 protected void CbEncryptCheckedChange(Object sender, EventArgs e)
    {
        var eventSource = sender as CheckBox;
        var psdSource = ((GridViewRow)((CheckBox)sender).Parent.Parent).Cells[1].Controls[1] as TextBox;
        var labelName = ((GridViewRow) ((CheckBox) sender).Parent.Parent).Cells[0].Controls[1] as  TextBox;
        if (eventSource != null && psdSource != null)
        {
            psdSource.TextMode = eventSource.Checked ? TextBoxMode.Password : TextBoxMode.SingleLine;
            string plainPassword = psdSource.Text;
            string labelNameText = labelName.Text.ToString();
            ViewState[labelNameText] = (eventSource.Checked ? "true" : "false") + "#" +
                                    (eventSource.Checked ? GetEncryptedPassword(plainPassword) : plainPassword);
            psdSource.Attributes.Add("value",plainPassword);
            eventSource.Style.Add("display","inline");
        }
    }