学用 ASP.Net 之 System.Collections.Specialized.StringDictionary 类

StringDictionary 相当于 Key 和 Value 都是字符串的哈希表.

主要成员:

/* 属性 */
Count;  //
Keys;   //键集合
Values; //值集合

/* 方法 */
Add();           //
Clear();         //
ContainsKey();   //是否包含指定键
ContainsValue(); //是否包含指定值
CopyTo();        //将指定值赋值到数组
Remove();        //根据键删除

简单练习:

protected void Button1_Click(object sender, EventArgs e)
{
    StringDictionary sd = new StringDictionary();
    sd.Add("k1", "AAA");
    sd.Add("k2", "BBB");
    sd.Add("k3", "CCC");

    sd["k2"] = "bbb";

    string str = "";
    foreach (DictionaryEntry de in sd) //System.Collections.DictionaryEntry
    {
        str += string.Format("{0}:{1}; ", de.Key, de.Value);
    }

    TextBox1.Text = str; //k1:AAA; k2:bbb; k3:CCC; 
}                    

protected void Button2_Click(object sender, EventArgs e)
{
    StringDictionary sd = new StringDictionary();
    sd.Add("k1", "AAA");
    sd.Add("k2", "BBB");
    sd.Add("k3", "CCC");

    string str1, str2;
    str1 = str2 = "";

    foreach (string s in sd.Keys) { str1 += s + ","; }   //k1,k2,k3,
    foreach (string s in sd.Values) { str2 += s + ","; } //AAA,BBB,CCC,

    TextBox1.Text = str1 + "\n" + str2;
}