Create a class and have a static Read only property like
public class GlobalClass
{ public static string ConnectionString { get { return "Your connection string"
} }
}
and in the all pages you can access like this
string conn = GlobalClass.ConnectionString;
updated based on comments:
public class GlobalClass
{
public static Dictionary<string, string> ConnectionString
{
get
{
Dictionary<string, string> dict = new Dictionary<string, string>();
dict.Add("Con1", "Your connection string 1");
dict.Add("Con2", "Your connection string 2");
dict.Add("Con3", "Your connection string 3");
dict.Add("Con4", "Your connection string 4");
return dict;
}
}
}
and you can access it as
string con1 = GlobalClass.ConnectionString["Con1"];
string con2 = GlobalClass.ConnectionString["Con2"];
string con3 = GlobalClass.ConnectionString["Con3"];
string con4 = GlobalClass.ConnectionString["Con4"];