从视图状态到列表获取数据(视图状态具有表) [英] Get data from view state to list (viewstate have table)

问题描述

假设我在一个像下面这样的列表中有一个数据，现在我想从已经包含表的viewstate中获取数据，我想要一列.我该怎么办?

Suppose I have a data in a list like below and now I want to get data from viewstate which already contain table in that I want one column. How can I do that?

public List<Employee> GetEmployeeList()
    {
        List<Employee> empList = new List<Employee>();
        empList.Add(new Employee() { ID = 1, Email = "[e-mail]"});
        empList.Add(new Employee() { ID = 2, Email = "[e-mail]"});
        empList.Add(new Employee() { ID = 3, Email = "[e-mail]"});
            empList.Add(new Employee() { ID = 8, Email = "[e-mail]"});
        empList.Add(new Employee() { ID = 9, Email = "[e-mail]"});
        empList.Add(new Employee() { ID = 10, Email = "[e-mail]" });
        return empList;
    }

推荐答案

如果我正确地回答了您的问题，则说明viewstate中有一个数据表，并且您想添加您上面显示的列表中的特定列.如果是这样，您可以:

1-从viewstate获取数据表. DataTable dataTable = ViewState["myDataTable"]
2-从GetEmployeeList(...)获取列表. List<Employee> listEmployee = GetEmployeeList();

3-遍历数据表的行并将值添加到列表变量.

If i''m getting your question right you have a datatable in the viewstate and you want to add all the values from rows of a particular column to the list you have shown above. if that is the case you can:

1- Get Datatable from viewstate. DataTable dataTable = ViewState["myDataTable"]
2- Get the list from GetEmployeeList(...). List<Employee> listEmployee = GetEmployeeList();

3- Iterate through rows of datatable and add values to your list variable.

for(rowIndex=0; rowIndex<datatable.rows.count;>{
string columnValue = dataTable.Rows[rowIndex]["email"];
Employee emp = new Employee(){ID=someID, Email=columnValue});
}

希望对您有所帮助.
谢谢，
Hemant

Hope it will help.
thanks,
Hemant

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