How to make application get database connection string dynamically?

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Hello, usually I put the connection string in App.config and call it to create connection which is usually static.

But what if I want to make this connection string dynamically changeable, so that when I put the application on another computer I just use a form to input database information or call them from from a class or even file, to make it changeable easy so what is the best way to do that, and how to get the connection string after doing that.

Posted 26-Mar-15 22:07pm

Hassan Dbouk

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Abhinav S · Answer 1 · 2015-03-26T22:16:00

Solution 1

The idea behind storing in a file is also just that.
You only need to change configuration in the app file and your connection will work against another database.

Posted 26-Mar-15 22:16pm

Abhinav S

amagitech · Answer 2 · 2015-03-26T22:24:00

This code in my project I defined a method for send command
You can analyse this method

C#

public static bool SendCommand(string IP, string DatabaseName, string UserName, string Password, string SqlQueryScript)
       {
           bool result = false;
           try
           {
           SqlConnection connection = new SqlConnection("Data Source=" + IP + ";Initial Catalog=" + DatabaseName + ";User ID=" + UserName + ";Password=" + Password);
           string[] commandTextArray = SqlQueryScript.Split(new string[] { "GO" }, StringSplitOptions.RemoveEmptyEntries);
           connection.Open();
           foreach (string commandText in commandTextArray)
           {
               if (commandText.Trim() == string.Empty) continue;
               SqlCommand command = new SqlCommand(commandText, connection);
               command.ExecuteNonQuery();
               connection.InfoMessage += new SqlInfoMessageEventHandler(myConnection_InfoMessage);
           }
           connection.Close();


           result = true;
            }
           catch(Exception ex)
           {

               ErrorMessage.errorMessage = ex.Message + "\n (" + DateTime.Now.ToLongTimeString()+")";
           }
           return result;
       }