标签： DropDownList

 

给几个在C#中，使用正则表达式取页面下拉菜单(select)中的值示例:

//取html中全部 select 的 name
Regex reg_name = new Regex(@"(?<=<select name=\"").*?(?=\"")");

//取html中全部<select>项的值
Regex reg_select = new Regex("(?is)<select name=*.*?>]*.*?</select>");

//取html中一个 select name 等于"Status"的值
Regex status = new Regex(@"(?is)<select name=\""status\"">]*.*?</select>");

 

一下是一段完整的代码和方法，取html中一个下拉菜单 select name 等于”Status”的中值，添加到DropDownList中:

        string strDoc = （你的html）;

        //取html中一个下拉菜单 select name 等于"Status"的中值
        Regex status = new Regex(@"(?is)<select name=\""status\"">]*.*?</select>");
        MatchCollection mc_status = status.Matches(strDoc);
        getSelectOptions(mc_status, cmbStatus);

        /// <summary>
        /// 取select对列表复制
        /// </summary>
        /// <param name="selected"></param>
        /// <param name="cmb"></param>
        void getSelectOptions(MatchCollection selected, ComboBox cmb)
        {
            if (selected.Count < 1)
                return;
            txtValues.Text = "";
            txtValues.Text = selected[0].Value.Replace("</option>", Environment.NewLine);
            string tmpTxt = "";
            foreach (string s in txtValues.Lines)
            {
                if (s == "")
                    continue;
                string a = "";
                a = s.Replace("\"", "").Replace("<option value=\"", "");
                int x = a.LastIndexOf(">");
                tmpTxt += a.Substring(x + 1) + Environment.NewLine;
            }
            txtValues.Text = tmpTxt.Trim();
            cmb.Items.Clear();
            cmb.Items.AddRange(txtValues.Lines);
            cmb.SelectedIndex = 0;
            cmb.Size = cmb.PreferredSize;
        }

 

推荐一个正则表达式测试/验证工具 – http://bohu.net/blog/8814