Problem in Connection String in VB.NET

Question

Hi all Below is the connection string in my app.config file in Window forms application. I got this error : Object reference not set to an instance of an object. in vb.net windows application for sql connection string here is the code: Dim str As String= ConfigurationManager.ConnectionStrings(ConnectionString1).ConnectionString

Rohatash Kumar · Answer

Thanks venkata But still I got the same error : Object reference not set to an instance of an object.

Rohatash Kumar · Answer

Thanks Datta  But still I got the same error : Object reference not set to an instance of an object.

venkata kumar · Answer

hi check with fallowing using System.Configuration; SqlConnection con = new SqlConnection(ConfigurationSettings.AppSettings[ConnectionString]);

Rohatash Kumar · Answer

Thanks Vithal for your effort. But still I got the same error : Object reference not set to an instance of an object.

Datta Kharad · Answer

Try this Code........... To read the connection string into your code use the ConfigurationSettings class. string connStr = ConfigurationManager.ConnectionStrings[myConnectionString].ConnectionString;

Vithal Wadje · Answer

Sir according to my experience their is nothing wrong in code but try the following one