In my winforms Application, I want to display the content of my PostgreSQL database in a grid view. I am using Entity Framework 5.0 and devart dotconnect connector. I have some arabic values in my database that cannot be displaying in gridview, they are coded. He return s some thing like that شارع الوكالة -
Please try setting the Unicode connection string parameter value to True.
To do it in Entity Developer, open Database Explorer, right-click the Database Connection and select Edit Connection Properties from the shortcut menu, click the Advanced button. Set Unicode to True in the opened dialog box and save changes.
If it doesn't help, please contact us with more information about this issue, e g.:
if possible, send us a small test project, with which this error could be reproduced;
the version of PostgreSQL server, etc.
Related
How to create a SQL Server database using Entity Framework databbase-first code?
I've mistakenly deleted the database from SQL Server, but I've added EDO in model at my VS 2017 project. So, now I've EDO code, can I restore database with the help of that code ?
If you are able to open edmx in Model Browser in Visual Studio, you can generate script for database by right clicking on edmx diagram. Select Generate Database from Model.
FYI : This will generate only basic structure. Not stored procedure, udf's etc.
And you will get script as below.
Exporting an Entity Data Model to a SQL-Server database
Open the SQL Server Management Studio.
Right click on Databases, select New Database
Type MyFirstEF on Database name. Click OK.
We're going to set the connection properties for your database from Visual Studio:
Right-click on the EDM design mode, select Generate Database from Model
Click on New Connection.
Type your SQL-Server host name on Server name field.
Select the database you created in Step 3 on the field Select or enter a database name. Click OK.
Click Next.
Choose a version of Entity Framework that you use . Click Next.
You have just generated the script to create the database.
For step by step walk-through click here
I followed the directions as detailed in this answer, and my enumeration was saved and can be utilized throughout the app. But in the case that I wanted to add additional options or change the names of existing options, how do I that?
I know I can do so by editing the EDMX file by hand in a text editor. I'd rather do it within Visual Studio in a fashion similar to how I generated the enumeration to begin with if it's possible.
You can use the entity data model browser to update this. In your menu bar, navigate to View -> Other Windows -> Entity Data Model Browser. I think you need to have your edmx file open to see this option. That opens a model browser window and under the "Enum Types" folder you can double click your enum and update it.
I am following this guide at dev.mysql.com to use an Entity Framework Entity.
I have got to point 3 but my data connection is not showing in the data connection drop down box.
I originally made a new (working) connection using this guide, this connection is displayed in the Server Explorer panel and I can see the tables etc. How can I make the connection appear in the dropdown list in the Entity Data Model List?
For anyone else who has this problem. Rebuild the solution after adding the connection in Server Explorer and the option appears in the drop down list.
Is it possible to get Linq to Entities working with a C# application.. I've done it with my asp.net site, but I can't figure out how to set it up with my new project.
When I click to add in a data connection, the only options are Microsoft Access, SQL Compact edition, and SQL Database file..
Thoughts?
I think you did some thing wrong. I suggest you use the NuGet to add the entity framework to your project. Check the below link
http://nuget.org/List/Packages/EntityFramework
Im using c# .net windows form application.
I have many databases created using sql server Management studio 2005. Each database has several tables. i have a button, when clicked should allow me to select a database among several databases and in that database i want to select a single table. Later i need to display the contents of the selected table into a datagrid view.I came to know that it can be done using Webconfig. How can i acheive this?
It goes like this
a) select a database
b) In that database select a table
c) display the contents into a datagridview.
You got some things mixed up a bit. A web.config file is only used for web applications created with ASP.Net.
For windows application you can use the App.config file, which is like the web.config for web applications. As part of the app.config is the "connectionStrings" section which contains one or multiple connection string for database connections. Take a look at this page:
http://msdn.microsoft.com/en-us/library/ms254494%28VS.80%29.aspx
In code you then can retrieve the connections string via the ConfigurationManager.ConnectionStrings properties.
It is called "programming". Good enough an answer? I mean, you basically ask a LOT ;)
Ok, here some details:
You need to log into the server, obviously.
Then find out what databases exist. MASTER database is your friend - look at the sys schema there, you will find out the tables there contain all information.
Then you need to find out what tales exist. The INFORMATION_SCHEMA is your friend. It exists in every database. It has nice views that allow you to ask for tables, columns etc.
From there on it is some low level beginner training - given a database and table name, how do you get the data? ;)