c# - 动态创建动态 RadioButtonsList

Question

我正在制作一个有趣的“调查”表格，并试图通过使流程过于复杂来打破单调乏味。我有一组单选按钮列表，我想根据一串名称和一串值动态创建它们。值不是问题。它正在创建我无法弄清楚的所有单选按钮列表。

例如，我可以继续这样做:

    string[] level = {"Expert", "Proficient", "Limited Experience", "No Experience"};

    this.rblCSharp.Items.Clear();
    for (int i = 0; i < level.GetLength(0); i++) {
        this.rblCSharp.Items.Add(level[i]);
    }
    this.rblCSharp.RepeatDirection = RepeatDirection.Horizontal;


    this.rblVbNet.Items.Clear();
    for (int i = 0; i < level.GetLength(0); i++)
    {
        this.rblVbNet.Items.Add(level[i]);
    }
    this.rblVbNet.RepeatDirection = RepeatDirection.Horizontal;

...但我不想。我想做更多这样的事情:

    string[] level = {"Expert", "Proficient", "Limited Experience", "No Experience"};

    string[] language = { "CSharp", "VbNet", "VbClassic", "Crystal", "Ssrs", "Sql2005", "UiWeb" };

    for (int j = 0; j < language.GetLength(0); j++) {
        this.rbl[j].Items.Clear();
        for (int i = 0; i < level.GetLength(0); i++) {
            this.rbl[j].Items.Add(level[i]);
        }
        this.rbl[j].RepeatDirection = RepeatDirection.Horizontal;
    }

Answer 1

您需要一种方法来引用与语言相对应的 RadioButtonList 控件。您有一个字符串数组，所以一种方法是使用 FindControl，但这不是我的偏好。

另一种方式是:

var languageControls = new List<RadioButtonList> { rblCSharp, rblVbNet, rblVbClassic, rblCrystal, rblSsrs, rblSql2005, rblUiWeb };

foreach(var rbl in languageControls)
{
    rbl.Items.Clear();
    // this could be a foreach instead, but I kept your original code
    for (int i = 0; i < level.GetLength(0); i++)
    {
        rbl.Items.Add(level[i]);
    }
    rbl.RepeatDirection = RepeatDirection.Horizontal;
}

---

FindControl 方法(只有动态创建和添加 RadioButtonList 控件才有意义，而不是在标记中和通过 IntelliSense 可用)

string[] level = {"Expert", "Proficient", "Limited Experience", "No Experience"};
string[] language = { "CSharp", "VbNet", "VbClassic", "Crystal", "Ssrs", "Sql2005", "UiWeb" };

foreach (string lang in language)
{
    RadioButtonList rbl = (RadioButtonList)FindControl("rbl" + lang);
    if (rbl == null)
        continue;  // keep going through the rest, or throw exception

    rbl.Items.Clear();
    // this could be a foreach instead, but I kept your original code
    for (int i = 0; i < level.GetLength(0); i++)
    {
        rbl.Items.Add(level[i]);
    }
    rbl.RepeatDirection = RepeatDirection.Horizontal;
}