How to Convert Simple C# coding to Linq Coding

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Hi,,,
I want to Convert this coding this give error...any body help me..

C#

DataTable GetMenuData(int id)
    {
        //using (SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["CMSConnectionString"].ConnectionString))
        //{
        //    SqlDataAdapter dadCats = new SqlDataAdapter("SELECT * FROM MenuDetails where MenuId=1 and Status=1 and ParentID=" + id + "", con);
        //    DataSet dst = new DataSet();
        //    dadCats.Fill(dst);
        //    return dst.Tables[0];


        //}
        using (NKDataContext db = new NKDataContext())
        {
            var dt = db.GetMenuDetails().Where(x=>x.MenuID==1);

            return dt.CopyToDataTable();
        }
    }

Please correct Uncommented Coding...

Thank's in Advance.

Posted 25-Aug-11 23:02pm

Niranjankr

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Comments

Nickos_me 25-Nov-11 3:41am

What is type of error?

2 solutions

Solution 1

Is "GetMenuDetails" a method or table name??

you should follow this way...

C#

DataContext db = new DataContext();

var a= db.TableName.Where(Condition);
return a;

-Sagar Solanki

Posted 25-Aug-11 23:10pm

sasolanki007

Comments

Herman<T>.Instance 26-Aug-11 5:17am

a private method

Niranjankr 26-Aug-11 7:58am

Method Name ...
and its return type is DataTable..

sasolanki007 7-Sep-11 21:20pm

have you tried the way I recommended?

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Niranjankr · Accepted Answer · 2011-11-24T21:16:00

public static DataTable LINQToDataTable<t>(IEnumerable<t> varlist)
    {
        DataTable dtReturn = new DataTable();         
        PropertyInfo[] oProps = null;
        if (varlist == null) return dtReturn;
        foreach (T rec in varlist)
        {
            if (oProps == null)
            {
                oProps = ((Type)rec.GetType()).GetProperties();
                foreach (PropertyInfo pi in oProps)
                {
                    Type colType = pi.PropertyType;
                    if ((colType.IsGenericType) && (colType.GetGenericTypeDefinition() == typeof(Nullable<>)))
                    {
                        colType = colType.GetGenericArguments()[0];
                    }
                    dtReturn.Columns.Add(new DataColumn(pi.Name, colType));
                }
            }
            DataRow dr = dtReturn.NewRow();
            foreach (PropertyInfo pi in oProps)
            {
                dr[pi.Name] = pi.GetValue(rec, null) == null ? DBNull.Value : pi.GetValue
                (rec, null);
            }
            dtReturn.Rows.Add(dr);
        }
        return dtReturn;
    }</t></t>