How to use SqlClient in ASP.NET Core?
C#asp.net Mvcasp.net CoreSqlclient.Net CoreC# Problem Overview
I am trying to use SQLClient library in the ASP.net Core but cant seem to get it working. I found this article online advising how to setup but its not working for me: http://blog.developers.ba/using-classic-ado-net-in-asp-net-vnext/
I have a simple console application package. My project.json looks like this:
{
"version": "1.0.0-*",
"description": "DBTest Console Application",
"authors": [ "" ],
"tags": [ "" ],
"projectUrl": "",
"licenseUrl": "",
"compilationOptions": {
"emitEntryPoint": true
},
"dependencies": {
"System.Data.Common": "4.0.1-beta-23516",
"System.Data.SqlClient" : "4.0.0-beta-23516"
},
"commands": {
"DBTest": "DBTest"
},
"frameworks": {
"dnx451": { },
"dnxcore50": {
"dependencies": {
"Microsoft.CSharp": "4.0.1-beta-23516",
"System.Collections": "4.0.11-beta-23516",
"System.Console": "4.0.0-beta-23516",
"System.Linq": "4.0.1-beta-23516",
"System.Threading": "4.0.11-beta-23516"
}
}
}
}
And I try the following code:
using System;
using System.Data.SqlClient;
namespace DBTest
{
public class Program
{
public static void Main(string[] args)
{
using (SqlConnection con = new SqlConnection(ConnStr)) {
con.Open();
try {
using (SqlCommand command = new SqlCommand("SELECT * FROM SAMPLETABLE", con)) {
command.ExecuteNonQuery();
}
}
catch {
Console.WriteLine("Something went wrong");
}
}
Console.Read();
}
}
}
But get the following errors:
Anyone else got this working?
C# Solutions
Solution 1 - C#
I think you may have missed this part in the tutorial:
> Instead of referencing System.Data and System.Data.SqlClient you need > to grab from Nuget: > > System.Data.Common and System.Data.SqlClient. > > Currently this creates dependency in project.json –> aspnetcore50 > section to these two libraries. > > "aspnetcore50": { > "dependencies": { > "System.Runtime": "4.0.20-beta-22523", > "System.Data.Common": "4.0.0.0-beta-22605", > "System.Data.SqlClient": "4.0.0.0-beta-22605" > } > }
Try getting System.Data.Common and System.Data.SqlClient via Nuget and see if this adds the above dependencies for you, but in a nutshell you are missing System.Runtime.
Edit: As per Mozarts answer, if you are using .NET Core 3+, reference Microsoft.Data.SqlClient
instead.
Solution 2 - C#
For Dot Net Core 3, Microsoft.Data.SqlClient should be used.
Solution 3 - C#
Try this one Open your projectname.csproj file its work for me.
<PackageReference Include="System.Data.SqlClient" Version="4.6.0" />
You need to add this Reference "ItemGroup" tag inside.