How we set SQL Connection string dynamically in C#.net(Windows Application)

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HI,

am developing my windows application using C#.net..here i want to connect my sql server 2008 database with my project...

My Problem is how to set sql connection string dynamically in my project...

Any one help me out of this........

Posted 21-Sep-11 19:14pm

Nathansathya

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4 solutions

Solution 2

You can build your connection string from server name string and give that to your SqlConnection object.

C#

string constr = "Server=" + servername + ";database=" + dbname + ";integrated security=sspi";

Posted 21-Sep-11 19:20pm

Mehdi Gholam

Comments

Nathansathya 22-Sep-11 2:10am

cant get clearly friend..can yu explain in detail

Mehdi Gholam 22-Sep-11 2:16am

just replace the servername and dbname with the values you want.

Solution 3

Create a class for Connection and set connection string in that..
Then replace the servername and dbname when you want.

Posted 21-Sep-11 23:59pm

abintj

Solution 4

create class and place in it method return connection string.
static public string Cconnection()
{
get{return "data source=......."}
}

Posted 24-Sep-11 2:28am

mhassan083

Comments

Rahul Kumar Ghosh 12-Apr-13 16:40pm

I am having same problem but a bit different.
I have made App.config file provided all the values of the connection string and a separate class named "SQLCONNECTION.cs" too and provided same values for it also, but in both the cases when I need to change my password or server name i have to do it in coding.
But i want something that would made that class (SQLCONNECTION.cs) or App.config file take user inputs (Server Name, User Name, Password) from a WindowsForm and save it till the user want to change it again.
Any Solution.. ?
rahulghosh.0101@gmail.com

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Mario Majčica · Accepted Answer · 2011-09-21T19:19:00

Well by saving your connection string in a web.config (or app.config) file.

Add something similar:

XML

<configuration>
  <connectionStrings>
  <clear />
    <add name="Target" connectionString="server=MYSERVER; Database=MYDB; Integrated Security=SSPI;" />
  </connectionStrings>
</configuration>

Then retrieve it by using ConfigurationManager:

ConfigurationManager.ConnectionStrings["Target"].ConnectionString

EDIT:
You also need to reference the System.Configuration library in order to make it work.

A simple

textBox1.Text = ConfigurationManager.ConnectionStrings["Target"].ConnectionString;

Will show your connection string ;)

Hope it helps

Cheers!