I have got a local SQL Server DB, up and running, and I am trying to connect to it in a seemingly failproof way:
new SqlConnection(@"Server=(localdb)\v12.0;Integrated Security=true;Database=MyDBName;");
However, this line throws an exception: "'ServerVersion' threw an exception of type 'System.InvalidOperationException'"? What could I do to fix it?
I have run
sqllocaldb create "v12.0"
but it seems to make no difference.
Step 1: go to WebConfig File and Write this Code:
enter code here
<connectionStrings>
<add name ="MyDbConn" ---> write same it is
connectionString="Server=SYED\SQLEXPRESS; database=Templete_2_DB;
Trusted_Connection=True" providerName="System.data.sqlclient"
/>
</connectionStrings>
code here
SYED\SQLEXPRESS; ---> this is your servername Templete_2_DB; ----> this is your database name
step 2: Go to your page event and write code like this..
enter code here
SqlConnection con = new SqlConnection(
WebConfigurationManager.ConnectionStrings["MyDbConn"].ConnectionString);
SqlCommand cmd = new SqlCommand("select * from Accounts_Data where
UserName=@username and Password=@password", con);
cmd.Parameters.AddWithValue("@username", txt_username.Text);
cmd.Parameters.AddWithValue("@password", txt_userPassword.Text);
SqlDataAdapter sda = new SqlDataAdapter(cmd);
DataTable dt = new DataTable();
sda.Fill(dt);
con.Open();
int i = cmd.ExecuteNonQuery();
con.Close();
if (dt.Rows.Count > 0)
{
Response.Redirect("Default.aspx");
}
code here
Go ahead... in this you will be guided
Sheebu Ansari
Create a method:
private void connection()
{
con = new SqlConnection(ConfigurationManager.ConnectionStrings["conStrSheebu"].ConnectionString);
}
set in web.config as:
<connectionStrings>
<add name="conStrSheebu" connectionString="Data Source=(local);Initial Catalog=Sheebu;User ID=sa;Password = AnsarI" providerName="System.Data.SqlClient" />
</connectionStrings>
来源：https://stackoverflow.com/questions/33282511/how-to-fix-serverversion-threw-an-exception-of-type-system-invalidoperatione