Question

问题代码：

for (int i = 0; i <= numberOfPlayers - 1; i++)
{
    if (i == dealerPosition())
    {
        StringBuilder sb = new StringBuilder();

        // e.g. outputs "tbPosition1"
        sb.Append("tbPosition").Append(dealerPosition().ToString()); 

        // The following line of code does not work as sb is a string containing 
        // "thPosition1", not my controller tbPosition1. How do I fix this?
        Dispatcher.Invoke(() => { (sb.Text = dealerPosition().ToString(); });
        break;
    }
}

使用C＃，WPF，Visual Studio。

Answer 1

    sb.Append("tbPosition").Append(dealerPosition().ToString()); 

    // The following line of code does not work as sb is a string containing 
    // "thPosition1", not my controller tbPosition1. How do I fix this?
    Dispatcher.Invoke(() => { ((this.FindName(sb.ToString()) as TextBox).Text  = dealerPosition().ToString(); });

从Complexity的评论中，post提到您可以将所有元素添加到列表中，并在您想要处理它时循环/预测：

List<TextBox> textBoxesToEdit = new List<TextBox>(){tbposition1, tbposition2 /*so on*/};

foreach (TextBox textbox in textBoxesToEdit)
{
  //do stuff
}

Answer 2

FindName() should help you with this，但请注意，如果在最初创建控件后添加它们，则可能必须may have to register each control as you create it。

Answer 3

根据你对我的排名的回答，我会将我的tdPositionXYZ存储在一个数组或列表中，而不是使用所有代码来执行此操作：

Dispatcher.Invoke(() => {
    tbPositionArray[dealerPosition()].Text = dealerPosition().ToString();
});

如何从构建的字符串（控件名称）访问控件？

3 个答案: