Skip to main content

Error in Entity Framework

Error - The best overloaded method match for 'System.Data.Entity.Core.Objects.ObjectContext.ExecuteFunction(string, params System.Data.Entity.Core.Objects.ObjectParameter[])' has some invalid arguments.

Solution :
The problem is that your model don't know anything about new parameters. I guess that it happens when your model using EntityFramework (EF) lower version (5.0 for example), but in code you are trying to use EF 6.0.
So, you should either downgrade your code to EF 5.0, or upgrade your model to 6.0.
Upgrading model:
  1. Open Tools -> NuGet Package Manager -> Package Manager Console;
  2. Choose project, that contains your model as Default project on the top of Console.
  3. Type "Uninstall-Package EntityFramework" and press Enter;
  4. After removing, type "Install-Package EntityFramework -version 6.0.0" and press Enter again;
  5. Go to YourModelName.Context.cs and YourModelName.Context.tt and replace "using System.Data.Objects; using System.Data.Objects.DataClasses;" with "using System.Data.Entity.Core.Objects;". Also, you may need to make the same in all files, where this problem appears.
Or you can downgrade EF version, used in your code. For this, you should do all the same in first 3 steps but in the fourth replace "-version 6.0.0" with "-version 5.0.0". The 5th step is not needed for this.
 
Done :)

Comments

Post a Comment

Popular posts from this blog

show image in asp.net form from database

In order to show image from database to webform first add an image control in webpage.   <asp:Image ID="imgStudentImage" runat="server" Height="157px" Width="160px" /> Then add new webform to read image from database for example displayimage.aspx and in code behind model write the following code. public string str = //your string     public SqlConnection conn;     public SqlCommand sql = new SqlCommand();     public SqlDataReader dr;     public string strSQL;     protected void Page_Load(object sender, EventArgs e)     {         conn = new SqlConnection(str);         conn.Open();         long id = Convert.ToInt64(Request.QueryString["mId"]);         strSQL = "";         strSQL = strSQL + " SELECT snap from S...
Post a Comment
Read more

Export Doc,Access,Image,CSV,Excel,Pdf,XML,HTML,Text,Print of Gridview in Asp.net

First import itextsharp.dll in the solution and use three namespces (basically for pdf) using iTextSharp.text; using iTextSharp.text.pdf; using iTextSharp.text.html.simpleparser;          Then Use the following code :- on each button  click  protected void Page_Load(object sender, EventArgs e)         {             if (!Page.IsPostBack)             {                 BindGridDetails(GridView1);             }         }                 protected DataTable BindGridDetails(GridView GridView1)         {   ...
1 comment
Read more

im2col function in MATLAB explanation

Let us suppose we have A=[1 1;2 2] 1 1 2 2 ... ok Now img2col syntax  == im2col(A,[m n],block_type) Where block type = ('distinct','sliding') distinct places 0's in the final output,,,for padding, sliding,,repeats from the very first matrix element. after all elements read out. Now.. Now [m n] -- very important .... Number of Rows to show = M*N (if m=2 ,, n=2 then each column has 4 elements..) and Number of element fetch to repeat is M in row... That means,, OUTPUT OF THIS - im2col(A,[2 2], 'sliding') ans =      1      2      1      2 -- if  A=[1 1 1;2 2 2] A =      1     1     1      2     2     2 then im2col(A,[2 2], 'sliding') ans = contains 4 rows....as 2*2 ...   and fetch 2 elements as M=2 here... and slidin...
Post a Comment
Read more