Question

我想解锁表单上的多数文本框，但不是所有文本框。目前我正在使用这种解锁所有文本框的方法：

    private void UnlockVnos(Control control)
    {
        foreach (Control c in control.Controls)
        {
            if (c is TextBox)
            {
                ((TextBox)c).ReadOnly = false;
                ((TextBox)c).BackColor = Color.FromArgb(255, 255, 192);
            }
        }
    }

我的问题是：如何排除我不想解锁的特定文本框（我必须遍历大约50个文本框并解锁所有文本框，除了其中一些必须保持锁定。我想到的第一件事就是设置文本框'Tag'属性，但不知怎的，我不能让它在我的方法中工作。任何帮助都赞赏。

Answer 1

为此，我将我不想解锁的方框的文本框标签设置为＆＃34; DoNotUnlock＆＃34;。

        foreach (Control c in this.Controls)
        {
            if (c is TextBox && (string)c.Tag != "DoNotUnlock")
            {
                ((TextBox)c).ReadOnly = false;
                ((TextBox)c).BackColor = Color.FromArgb(255, 255, 192);
            }
        }

使用密钥字典。我想要更多功能的词典，Bool可以与键结合使用。不久将添加一个代码示例。

    private void UnlockVnos()
    {
        Dictionary<string, bool> mytags = new Dictionary<string, bool>();
        mytags.Add("DoNotUnlock", false);
        mytags.Add("StayAwayFromThisBox", false);
        mytags.Add("DontEvenDateUnlockThis", false);

        foreach (Control c in this.Controls)
        {
            if ((c is TextBox && c.Tag == null || !mytags.Keys.Contains((string)c.Tag)))
            {
                ((TextBox)c).ReadOnly = false;
                ((TextBox)c).BackColor = Color.FromArgb(255, 255, 192);
            }
        }
    }

在字典中使用bool的第3个样本

    private void UnlockVnosAgains()
    {
        //here we have a Dictionary of all the tags you want to handle.
        //True for boxes which should be readonly, false for boxes which should not be.
        Dictionary<string, bool> mytags = new Dictionary<string, bool>();
        mytags.Add("SomeTag1", false);//leave it alone
        mytags.Add("SomeTag2", true);//make it readonly
        mytags.Add("SomeTag3", true);//make it readonly
        mytags.Add("SomeTag4", false);//leave it alone
        mytags.Add("DoNotUnlock", true);//make it readonly

        foreach (Control c in this.Controls)
        {
            //if C is a textbox, and the Tag is NOT null and the dictionary contains the tag
            if ((c is TextBox && c.Tag != null && mytags.Keys.Contains((string)c.Tag)))
            {
                ((TextBox)c).ReadOnly = mytags[(string)c.Tag];//assign the appropriate bool from the dictionary
                ((TextBox)c).BackColor = Color.FromArgb(255, 255, 192);//do your color thing... wink wink, this one could be stored along with your true or false too
            }
        }
    }

Answer 2

我假设您对所有不想解锁的文本框都有相同的标记值。

请尝试以下操作：

private void UnlockVnos(Control control)
{
    foreach (Control c in control.Controls)
    {
        if (c is TextBox)
        {
            var tBox = (TextBox)c;
            var tag = Convert.ToString(tBox.Tag);

            if (tag !="YourTagValue")){ //Take care of case-sensitivity
               tBox.ReadOnly = false;
               tBox.BackColor = Color.FromArgb(255, 255, 192);
            }
        }
    }
}

Answer 3

private void UnlockVnos(Control control)
{
    foreach (Control c in control.Controls)
    {
        if (c is TextBox)
        {
            var textbox = (TextBox)c;

            textbox.ReadOnly = textbox.Tag == "myTag";
            textbox.BackColor = Color.FromArgb(255, 255, 192);
        }
    }
}

c＃如何解锁多个文本框

3 个答案: