LINQ Specified Cast is Not Valid with a ushort Table Column

LINQ Specified Cast is Not Valid with a ushort Table Column

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LINQ Specified Cast is Not Valid with a ushort Table Column
Tag : chash , By : Pancilobak
Date : November 24 2020, 09:00 AM

will help you The equivalent to SQL Server smallint in c# is short, not ushort. And if the field is nullable, then you need to use short? like this:
var c = DSFinyr.Tables[0].AsEnumerable().Max(p => p.Field<short?>("finid"));

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LINQ union with BIT column causing Specified cast is not valid error

Tag : chash , By : Eugenio
Date : March 29 2020, 07:55 AM
Hope that helps The generated sql includes the following line, where @p4 corresponds to the Blahblahblah=false line in your projection:
DECLARE @p4 Int = 0
var one =
    (from ch in TEST_CHARTs
    join a in TEST_CHART_SERIES on ch.CHARTID equals a.CHARTID into a_join
    from cs in a_join.DefaultIfEmpty()
    join ycols in TEST_QUERY_COLS on new { key1 = cs.YAXIS, key2 = ch.QUERYID } equals new { key1 = ycols.COLNAME, key2 = ycols.QUERYID }
    where ch.CHARTID == 1
    select new 
        POSITION = 0,
        Blahblahblah = cs.Blahblahblah

var two =
    (from ch in TEST_CHARTs
    join xcol in TEST_QUERY_COLS on new { key1 = ch.XAXIS, key2 = ch.QUERYID } equals new { key1 = xcol.COLNAME, key2 = xcol.QUERYID }
    where ch.CHARTID == 1
    select new 
        POSITION = 0,

var three = 
    from x in two
    select new
        Blahblahblah = false

var four = one.Union(three).Distinct();

Error in LINQ to SQL: specified cast is not valid

Tag : sql , By : ChristianM
Date : March 29 2020, 07:55 AM
should help you out If my memory serves, the Customers table in Northwind does not have CustomerID as int (I think its NVARCHAR). If you wrote the Contact class manually, instead of have LINQ to SQL generate it, make sure that the types on your class match the types in the database table
EDIT: From this link http://msdn.microsoft.com/en-us/library/bb399575(v=vs.90).aspx am inclined to think that the CustomerID field is not INT but NVARCHAR (or NCHAR for that matter)

LINQ Specified Cast Not Valid

Tag : asp.net , By : n3txpert
Date : March 29 2020, 07:55 AM
will be helpful for those in need I ended up dropping the table back into my Data Context and everything is working. Obviously something was corrupt with the table that was dropped in there the first time.

asp.net - Specified cast not valid Linq

Tag : chash , By : codelurker
Date : March 29 2020, 07:55 AM
hop of those help? If all fields are not null, then cast fields to int instead of nullable int?
var projjType = from projT in dtProjList.AsEnumerable()
                where projT.Field<int>("ProjectId") == projId && 
                      projT.Field<int>("FilterId") == 1 
                select projT;

LINQ: Specified Cast is not valid

Tag : linq , By : Arnaud Goudsmit
Date : March 29 2020, 07:55 AM
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