尝试使用dapper创建登录表单以连接到SQL，但我无法使DataAdapter正常工作

Question

Here is my code

public class LoginFunction
{
    public DataTable User (string username, string pword)
    {
        using (IDbConnection connection = new System.Data.SqlClient.SqlConnection(ConnectionHelper.CnnVal("GymDB")))
        {

            var query = ("Select * from [USER] where username = '{username}'  and password = '{pword}'");
            SqlDataAdapter sda = new SqlDataAdapter(query, connection);
            DataTable dtbl = new DataTable();
            sda.Fill(dtbl);



        }
    }
}

}

The error im getting is "cannot convert from 'System.Data.IDbConnection' to 'string'".

The error is with the connection argument for SqlDataAdapter - I thought this would get the SQL connection from the IDbConnection.

Answer 1

I'm sorry I can not comment yet.

Try to change IDbConnection to SqlConnection and var query to string query and take away the parenthesis.

See if it works!?