How do I select a column in the table that I have its name as string

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Hi,
Suppose that I have DropDownList that contain the name of the table's column's name. I used LINQ to SQL commands for querying. The code is like this:

C#

WSMDataClassesDataContext wsrdTable = new WSMDataClassesDataContext();
string SelectedParameter = DropDownListParameters.SelectedValue;
var DataFromWSRD = from wsm in wsrdTable.WeatherStationReportDetails
                   where wsm.DateTime >= Date1 && wsm.DateTime <= Date2
                   select wsm;
List<object> SelectedParam = new List<object>();
foreach (var temp in DataFromWSRD)
{
        SelectedParam.Add("here should be selected the column that I have its name");
}

or

C#

WSMDataClassesDataContext wsrdTable = new WSMDataClassesDataContext();
string SelectedParameter = DropDownListParameters.SelectedValue;
var DataFromWSRD = from wsm in wsrdTable.WeatherStationReportDetails
                   where wsm.DateTime >= Date1 && wsm.DateTime <= Date2
                   select new{ "here I want to choose the column that I have its name as string" };

I want to dynamically select the column from the table based on DropDownList

Thank you very much in advance.

Posted 27-Jul-11 20:08pm

Salah_Afa

Updated 28-Jul-11 0:57am

v4

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DominicZA · Answer 1 · 2011-07-27T20:29:00

Well what do you want to select exactly??

C#

MyDatabaseEntities context = new MyDatabaseEntities();

string singleString = context.MyTable.FirstOrDefaut(/*Lambda Expression to select a specific row*/).MyColumnName;
List<string> stringList = context.MyTable.Select(/*Lambda Expression to select what column you want*/).ToList();
</string>

http://msdn.microsoft.com/en-us/library/bb397687.aspx[^] -- Lambda expressions explained.

I hope this helps.