在选定的选项卡的所有文本框的明文 [英] Clear Text of All Textboxes in Selected Tab

问题描述

我有了一个标签控件一种形式，每个标签都有一个号码文本框，标签和按钮。我想使用户能够清除所选标签的文本框的所有文本。

I have a form that has a tab control and each tab has a number of textboxes,labels and buttons. I want to enable the user to clear all text in the textboxes of the selected tab.

我曾尝试

    private void resetCurrentPageToolStripMenuItem_Click(object sender, EventArgs e)
    {
        foreach (TextBox t in tabControl1.SelectedTab.Controls)
        {
            t.Text = "";
        }
    }

上面的代码抛出一个 InvalidCastException的的消息无法投类型的对象System.Windows.Forms.Button为键入'System.Windows.Forms.TextBox 。

请我做了什么错，我该如何改正呢？

Pls what did i do wrong and how can i correct it?

推荐答案

发现这个网上，它的工作。

Found this online and it worked

    void ClearTextBoxes(Control parent)
    {
        foreach (Control child in parent.Controls)
        {
            TextBox textBox = child as TextBox;
            if (textBox == null)
                ClearTextBoxes(child);
            else
                textBox.Text = string.Empty;
        }
    }

    private void resetCurrentPageToolStripMenuItem_Click(object sender, EventArgs e)
    {
        ClearTextBoxes(tabControl1.SelectedTab);
    }

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