C＃如何解鎖多個文本框

Question

我想解鎖大多數表單，但不是所有文本框。 目前，我正在使用這種方法來解鎖所有文本框：

    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);
            }
        }
    }

我的問題是：如何排除我不想解鎖的特定文本框（我必須遍歷約50個文本框並對其全部進行解鎖，除了其中約10個必須保持鎖定狀態。）我想到的是設置文本框的'Tag'屬性，但是以某種方式我無法使其在我的方法中起作用。

Answer 1

為此，我將不想解鎖的框的文本框標簽設置為“ DoNotUnlock”。

        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);
            }
        }

帶有按鍵字典。 我要使用字典以獲取更多功能，其中Bool可以與鍵結合使用。 不久將為此添加一個代碼示例。

    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);
            }
        }
    }

在字典中使用布爾值的第三個樣本

    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

我假設您不想解鎖的所有文本框都具有相同的標記值。

請嘗試以下操作：

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);
        }
    }
}