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I originally made a new (working) connection using this guide, this connection is displayed in the Server Explorer panel and I can see the tables etc.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.
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 have created a database with several tables. Using Visual Studio 2012, I created a DataSource object that connects to those tables and created a DataGrid and some forms using the data from the SQL database.
In the process of development I then made changes to the SQL database. In one case I designated a column as a key in a table I had neglected to choose a key for. Now I want my application and the DataSource object to recognize these SQL changes.
How do I do that?
OK Bill, I believe I understand the problem now. Yes there is a way through the GUI is Visual Studio to pull the changes from your database into the Dataset you have created. Here is how you do it. Open the Data Sources Tab -> Select your DataSet You can see that mine is called People.
Now, I have updated my database by adding another column called "Phone" that I want to add to my dataset. I right click on the dataset and select Configure Data Source With Wizard.
I will expand the data objects selection and select my new column value.
Then click finish and my Dataset now has the new column in it.
I hope this helps you.
I am looking for a tool like mssql workbench where I can draw my database diagram, but for mssql instead. I am programming in asp.net core and would like to have the tool auto generate a diagram based on my existing models, but also let me modify (but not necessarily generate the classes) the diagram after.
You can use "Database Diagrams" feature from MSSQL Management Studio.
Open MSSQL Management Studio, Connect to the SQL Server and select the database.
Under selected database you should be able to find node "Database Diagram". Right click on it and select "Add new diagram".
You can create diagram from the existing tables in the database and also create new tables as well as modify existing table.
You also can save the diagram as JPEG format.
I am writing a test app, using Entity Framework with model-first approach. I had created an EDM model with tables, than created a SQL Server CE database, created connection to db and than Master created a file *.edmx.sqlce with big sql script. What i must do next? How to use it?
You need to execute the script against the database which will create the database for your model. There should be a "Play" icon in the toolbar (similar to a "Play" button on old cassete players) you can click to execute the script.
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.