如何使用 LINQ 和 FillDataSet(ds) 方法填充数据集 c#

Question

How to fill dataset using LINQ with FillDataSet(ds) Method. When iam trying to implement this code iam getting error like FillDataSet does not exist in current context.

My code is

DataSet ds = new DataSet();
ds.Locale = CultureInfo.InvariantCulture;
FillDataSet(ds);

DataTable products = ds.Tables["emp"];

IEnumerable<DataRow> query =
    from product in dtContext.emps.AsEnumerable()
    select product;

Please tell me how to fill dataset with FillDataSet(ds) Method. Thank you.

Answer 1

You don't have to fill a DataSet with LINQ2SQL. Nor do you have to use DataTable etc. All you need is the data context and perform queries on that:

var query = from product in dtContext.emps
            select product;

query will be of type IQueryable<T> and you can use eg a foreach on it to go through its content, or filter it further with a where clause. Why do you want a DataSet ?

Answer 2

You have to define your FillDataSet(DatatSet ds) method. Probably you should implement something similar to this example if you are following the MSDN tutorials.

Answer 3

From your post

FillDataSet does not exist in current context.

It clearly means that it cant access the FillDataSet method or else your method doesnt exist.

If it exists, then try changing the access specifier to public if it is in different class.

PS: did you declare any method named FillDataSet ?