C# 复选框 - 我可以清理它吗？

Question

这个函数是从form_onload 调用的。我基本上是在阅读注册表，确定哪些复选框被选中，然后在 GUI 中反映。

有没有什么方法可以压缩这个并写出更好的代码？使用 CheckState 属性怎么样？

谢谢。

木头

private void checkExcelSettings()
    {
        // Read what the values are for the checkboxes first and assign them to a string.
        string _excelEnable = Convert.ToString(Registry.GetValue(@"HKEY_CURRENT_USER\Software\Mask Data\", "ExcelEnableHash", "Unchecked"));
        string _excelSSN = Convert.ToString(Registry.GetValue(@"HKEY_CURRENT_USER\Software\Mask Data\", "ExcelSSNHash", "Unchecked"));
        string _excelCC = Convert.ToString(Registry.GetValue(@"HKEY_CURRENT_USER\Software\Mask Data\", "ExcelCCHash", "Unchecked"));
        string _excelWells = Convert.ToString(Registry.GetValue(@"HKEY_CURRENT_USER\Software\Mask Data\", "ExcelWellsHash", "Unchecked"));
        string s=@"t\""; //unimportant no-op to placate stackoverflow syntax highlighter.


        // Now let's make sure we reflect what they are supposed to be in the GUI.
        if (_excelEnable == "Checked")
        {
            chkbxExcelEnable.Checked = true;
        }
        else
        {
            chkbxExcelEnable.Checked = false;
        }

        if (_excelSSN == "Checked")
        {
            chkbxExcelSSN.Checked = true;
        }
        else
        {
            chkbxExcelSSN.Checked = false;
        }

        if (_excelCC == "Checked")
        {
            chkbxExcelCC.Checked = true;
        }
        else
        {
            chkbxExcelCC.Checked = false;
        }

        if (_excelWells == "Checked")
        {
            chkbxExcelWellsFargo.Checked = true;
        }
        else
        {
            chkbxExcelWellsFargo.Checked = false;
        }
    }

Answer 1

嗯，你至少可以把范围缩小到：

chkbxExcelCC.Checked = _excelCC.Equals("Checked");

这样可以避免所有 if/else 语句。

Answer 2

您可以通过将条件与赋值内联来删除所有不必要的 if/else 条件。您还可以将主键路径设为常量。但是，要真正简化它，您可以将查找密钥并与“已检查”进行比较的重复逻辑放在一个单独的方法中：

private void checkExcelSettings()
{
    // Now let's make sure we reflect what they are supposed to be in the GUI.
    chkbxExcelEnable.Checked = IsChecked("ExcelEnableHash");
    chkbxExcelSSN.Checked = IsChecked("ExcelSSNHash");
    chkbxExcelCC.Checked = IsChecked("ExcelCCHash");
    chkbxExcelWellsFargo.Checked = IsChecked("ExcelWellsHash");
}

private static bool IsChecked(string regValue)
{
    return Convert.ToString(
               Registry.GetValue(
                   @"HKEY_CURRENT_USER\Software\Mask Data\",
                   regValue,
                   "Unchecked")) == "Checked";
}

Answer 3

private void checkExcelSettings()
{
    // Read what the values are for the checkboxes first and assign them to a string.
    string _excelEnable = Convert.ToString(Registry.GetValue(@"HKEY_CURRENT_USER\Software\Mask Data\", "ExcelEnableHash", "Unchecked"));
    string _excelSSN = Convert.ToString(Registry.GetValue(@"HKEY_CURRENT_USER\Software\Mask Data\", "ExcelSSNHash", "Unchecked"));
    string _excelCC = Convert.ToString(Registry.GetValue(@"HKEY_CURRENT_USER\Software\Mask Data\", "ExcelCCHash", "Unchecked"));
    string _excelWells = Convert.ToString(Registry.GetValue(@"HKEY_CURRENT_USER\Software\Mask Data\", "ExcelWellsHash", "Unchecked"));

    // Now let's make sure we reflect what they are supposed to be in the GUI.
    chkbxExcelEnable.Checked = (_excelEnable == "Checked");
    chkbxExcelSSN.Checked = (_excelSSN == "Checked");
    chkbxExcelCC.Checked = (_excelCC == "Checked");
    chkbxExcelWellsFargo.Checked = (_excelWells == "Checked");
}

Answer 4

您可以将所有复选框放在一个面板上，并将每个复选框的 Tag 属性设置为注册表中的相应键。然后您可以在表单的 Load 事件中使用此代码：

foreach (CheckBox cb in panel1.Controls)
{
    cb.Checked = ((string)Registry.GetValue(RegPath, 
        (string)cb.Tag, "Unchecked") == "Checked");
}

这对未来的维护程序员来说不是很明显的缺点，所以我会在这里添加一个详细的评论，针对你最终的替换。

您也可以省略标签，只需使用相应的键名命名每个复选框，然后使用“cb.Name”而不是“(string)cb.Tag”。反正没有人喜欢匈牙利符号了。

Answer 5

private void checkExcelSettings()
    {
        string key = @"HKEY_CURRENT_USER\Software\Mask Data\";

        // Read what the values are for the checkboxes first and assign them to a string.
        string _excelEnable = Convert.ToString(Registry.GetValue(key, "ExcelEnableHash", "Unchecked"));
        string _excelSSN = Convert.ToString(Registry.GetValue(key, "ExcelSSNHash", "Unchecked"));
        string _excelCC = Convert.ToString(Registry.GetValue(key, "ExcelCCHash", "Unchecked"));
        string _excelWells = Convert.ToString(Registry.GetValue(key, "ExcelWellsHash", "Unchecked"));
        string s=@"t\""; //unimportant no-op to placate stackoverflow syntax highlighter.

        // Now let's make sure we reflect what they are supposed to be in the GUI.
        chkbxExcelEnable.Checked = (_excelEnable == "Checked");
        chkbxExcelSSN.Checked = (_excelSSN == "Checked");
        chkbxExcelCC.Checked = (_excelCC == "Checked");
        chkbxExcelWellsFargo.Checked = (_excelWells == "Checked");
    }

Answer 6

if else 使用简写符号

chkbxExcelEnable.Checked = _excelEnable == "Checked" ? true: false;