如何从对象获取值 [英] How to get values from object

问题描述

大家好，

我有empid列表存储在var变量c#中.我想从该变量中获取值.我该怎么做.
例如:

Hi all,

I have list of empid stored in var variable c#. i want to get the values from that variable. how i can do this.
eg:

var empid=viewstate["empid"];

现在，该empid包含三个empemp，如emp1，emp2，emp3.我该如何检索此var变量中存在的每个值.
有人可以举例说明吗?

谢谢
parithi

now the empid contains three empid like emp1,emp2,emp3 how can i retrieve each values that present in this var variable.
can anybody explain with example

Thanks
parithi

推荐答案

看看是否有帮助，

See if this helps,

List<double> d = new List<double>();
 d.Add(1);
 d.Add(2);
 d.Add(3);
 d.Add(4);

var v = d;

List<double> newVal = (List<double>)v;

就像这样:

like this:

var empid = viewstate["empid"];

foreach(int employeeID in (List<int>)empid)
{
    Console.WriteLine(employeeID);
}

检查此
首先，您必须Cast 您的ViewState

Hi ,
Check this
First you have to Cast your ViewState

protected void Page_Load(object sender, EventArgs e)
{

    if (!IsPostBack)
    {
        List<string> st = new List<string>();
        st.Add("me");
        st.Add("mm");
        st.Add("ee");
        st.Add("rr");
        ViewState.Add("st", st);
    }
}
protected void Button1_Click(object sender, EventArgs e)
{
    if (ViewState["st"] != null)
    {
        List<string> stView = (List<string>)ViewState["st"];
        foreach (string item in stView)
        {
            TextBox1.Text += item;
        }
    }

}

最好的问候
米特瓦里(M.Mitwalli)

Best Regards
M.Mitwalli

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