3

我有几个复选框和一个文本框。当我选中某个复选框时，它将禁用文本框和其他指定的复选框。

该代码适用于文本框。当我添加else语句时，它仍然适用于文本框，但不适用于复选框。如果我省略else并且只使用if来禁用它们，它就可以工作。如果未选中该复选框，我需要它来重新启用它们。

我在面板中有所有有问题的复选框。

    private void noModemChkbox_CheckedChanged(object sender, EventArgs e)
    {
        if (noModemChkbox.Checked == true)
        {
            custModemText.Enabled = false;
            pwrCbx.Enabled = false;
            e1Cbx.Enabled = false;
            e2Cbx.Enabled = false;
            e3Cbx.Enabled = false;
            e4Cbx.Enabled = false;
            dslblinkCbx.Enabled = false;
            enetCbx.Enabled = false;
            dslCbx.Enabled = false;
            inetCbx.Enabled = false;
            inetredCbx.Enabled = false;
            wlanCbx.Enabled = false;
            activityChkbox.Enabled = false;
        }
        else
            custModemText.Enabled = true;
        pwrCbx.Enabled = true;
        e1Cbx.Enabled = true;
        e2Cbx.Enabled = true;
        e3Cbx.Enabled = true;
        e4Cbx.Enabled = true;
        dslblinkCbx.Enabled = true;
        enetCbx.Enabled = true;
        dslCbx.Enabled = true;
        inetCbx.Enabled = true;
        inetredCbx.Enabled = true;
        wlanCbx.Enabled = true;
        activityChkbox.Enabled = true;
    }
4

3 回答 3

6

您忘记在 else 语句周围加上大括号：

private void noModemChkbox_CheckedChanged(object sender, EventArgs e)
{
    if (noModemChkbox.Checked == true)
    {
        custModemText.Enabled = false;
        pwrCbx.Enabled = false;
        e1Cbx.Enabled = false;
        e2Cbx.Enabled = false;
        e3Cbx.Enabled = false;
        e4Cbx.Enabled = false;
        dslblinkCbx.Enabled = false;
        enetCbx.Enabled = false;
        dslCbx.Enabled = false;
        inetCbx.Enabled = false;
        inetredCbx.Enabled = false;
        wlanCbx.Enabled = false;
        activityChkbox.Enabled = false;
    }
    else
    {
        custModemText.Enabled = true;
        pwrCbx.Enabled = true;
        e1Cbx.Enabled = true;
        e2Cbx.Enabled = true;
        e3Cbx.Enabled = true;
        e4Cbx.Enabled = true;
        dslblinkCbx.Enabled = true;
        enetCbx.Enabled = true;
        dslCbx.Enabled = true;
        inetCbx.Enabled = true;
        inetredCbx.Enabled = true;
        wlanCbx.Enabled = true;
        activityChkbox.Enabled = true;
    }
}

这不会简单得多吗？：

private void noModemChkbox_CheckedChanged(object sender, EventArgs e)
{
    bool bEnabled = !noModemChkbox.Checked;

    custModemText.Enabled = bEnabled;
    pwrCbx.Enabled = bEnabled;
    e1Cbx.Enabled = bEnabled;
    e2Cbx.Enabled = bEnabled;
    e3Cbx.Enabled = bEnabled;
    e4Cbx.Enabled = bEnabled;
    dslblinkCbx.Enabled = bEnabled;
    enetCbx.Enabled = bEnabled;
    dslCbx.Enabled = bEnabled;
    inetCbx.Enabled = bEnabled;
    inetredCbx.Enabled = bEnabled;
    wlanCbx.Enabled = bEnabled;
    activityChkbox.Enabled = bEnabled;
}
于 2013-04-11T18:54:48.000 回答
1

您需要在 else 周围使用括号，如下所示：

else
{
    custModemText.Enabled = true;
    pwrCbx.Enabled = true;
    e1Cbx.Enabled = true;
    e2Cbx.Enabled = true;
    e3Cbx.Enabled = true;
    e4Cbx.Enabled = true;
    dslblinkCbx.Enabled = true;
    enetCbx.Enabled = true;
    dslCbx.Enabled = true;
    inetCbx.Enabled = true;
    inetredCbx.Enabled = true;
    wlanCbx.Enabled = true;
    activityChkbox.Enabled = true;
}

您的原始代码实际上是这样解释的：

else
{
    custModemText.Enabled = true;
}

pwrCbx.Enabled = true;
e1Cbx.Enabled = true;
e2Cbx.Enabled = true;
e3Cbx.Enabled = true;
e4Cbx.Enabled = true;
dslblinkCbx.Enabled = true;
enetCbx.Enabled = true;
dslCbx.Enabled = true;
inetCbx.Enabled = true;
inetredCbx.Enabled = true;
wlanCbx.Enabled = true;
activityChkbox.Enabled = true;
于 2013-04-11T18:54:24.610 回答
1

您需要在 else 子句中包含所有您想要的内容的括号{}（如果您有多个语句）：

private void noModemChkbox_CheckedChanged(object sender, EventArgs e)
{
    if (noModemChkbox.Checked == true)
    {
        custModemText.Enabled = false;
        pwrCbx.Enabled = false;
        e1Cbx.Enabled = false;
        e2Cbx.Enabled = false;
        e3Cbx.Enabled = false;
        e4Cbx.Enabled = false;
        dslblinkCbx.Enabled = false;
        enetCbx.Enabled = false;
        dslCbx.Enabled = false;
        inetCbx.Enabled = false;
        inetredCbx.Enabled = false;
        wlanCbx.Enabled = false;
        activityChkbox.Enabled = false;
    }
    else
    {
        custModemText.Enabled = true;
        pwrCbx.Enabled = true;
        e1Cbx.Enabled = true;
        e2Cbx.Enabled = true;
        e3Cbx.Enabled = true;
        e4Cbx.Enabled = true;
        dslblinkCbx.Enabled = true;
        enetCbx.Enabled = true;
        dslCbx.Enabled = true;
        inetCbx.Enabled = true;
        inetredCbx.Enabled = true;
        wlanCbx.Enabled = true;
        activityChkbox.Enabled = true;
    }
}
于 2013-04-11T18:56:43.223 回答