How I Overwrite Connection String In Web Config ?

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Hi,

How i overwrite connection string in web config ?

i used below code

C#

Configuration config = System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration("~");
ConnectionStringsSection section = config.GetSection("MyConnectionString") as ConnectionStringsSection;
//section.SectionInformation.UnprotectSection();
section.SectionInformation.ProtectSection("DataProtectionConfigurationProvider");
section = (ConnectionStringsSection)config.GetSection("connectionStrings");
if (section != null)
{
   section.ConnectionStrings["connectionStrings"].ConnectionString = "Data Source=" + Server + ";Initial Catalog=" + Name + ";User ID=" + Username + ";Password=" + Password + ";Pooling=true;Min Pool Size=5;Max Pool Size=60;Connect Timeout=60"; 
   config.Save();
}

But the code inside the 'if condition' throw an object reference error..plz suggest a solution for this issue..

section.ConnectionStrings["connectionStrings"].ConnectionString is show null in add watch

Posted 13-Oct-14 22:59pm

Sajith Koleri

Updated 13-Oct-14 23:25pm

Nelek

v3

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Drazen Pupovac · Accepted Answer · 2014-10-14T00:00:00

The "connectionStrings" is the name of the section not the connection string name.

C#

var configuration = WebConfigurationManager.OpenWebConfiguration("~");
var section = (ConnectionStringsSection)configuration.GetSection("connectionStrings");
section.ConnectionStrings["MyConnectionString"].ConnectionString = "Data Source=" + Server + ";Initial Catalog=" + Name + ";User ID=" + Username + ";Password=" + Password + ";Pooling=true;Min Pool Size=5;Max Pool Size=60;Connect Timeout=60";
configuration.Save();

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