2 // System.Web.Compilation.ConnectionStringsExpressionBuilder
5 // Chris Toshok (toshok@ximian.com)
7 // (C) 2006 Novell, Inc (http://www.novell.com)
11 // Permission is hereby granted, free of charge, to any person obtaining
12 // a copy of this software and associated documentation files (the
13 // "Software"), to deal in the Software without restriction, including
14 // without limitation the rights to use, copy, modify, merge, publish,
15 // distribute, sublicense, and/or sell copies of the Software, and to
16 // permit persons to whom the Software is furnished to do so, subject to
17 // the following conditions:
19 // The above copyright notice and this permission notice shall be
20 // included in all copies or substantial portions of the Software.
22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
35 using System.Configuration;
36 using System.Web.Configuration;
39 namespace System.Web.Compilation {
41 [ExpressionEditor("System.Web.UI.Design.ConnectionStringsExpressionEditor, " + Consts.AssemblySystem_Design)]
42 [ExpressionPrefix("ConnectionStrings")]
43 public class ConnectionStringsExpressionBuilder : ExpressionBuilder {
45 public override object EvaluateExpression (object target, BoundPropertyEntry entry,
46 object parsedData, ExpressionBuilderContext context)
48 return GetConnectionString (entry.Expression.Trim());
51 public override CodeExpression GetCodeExpression (BoundPropertyEntry entry, object parsedData,
52 ExpressionBuilderContext context)
54 Pair connString = parsedData as Pair;
55 return new CodeMethodInvokeExpression (
56 new CodeTypeReferenceExpression (typeof (ConnectionStringsExpressionBuilder)),
57 (bool)connString.Second ? "GetConnectionStringProviderName" : "GetConnectionString",
58 new CodeExpression [] {new CodePrimitiveExpression (connString.First)}
62 public static string GetConnectionString (string connectionStringName)
64 ConnectionStringSettings conn = WebConfigurationManager.ConnectionStrings [connectionStringName];
68 return conn.ConnectionString;
71 public static string GetConnectionStringProviderName (string connectionStringName)
73 ConnectionStringSettings conn = WebConfigurationManager.ConnectionStrings [connectionStringName];
77 return conn.ProviderName;
80 public override object ParseExpression (string expression, Type propertyType, ExpressionBuilderContext context)
82 bool wantsProviderName = false;
83 string connStringName = String.Empty;
85 if (!String.IsNullOrEmpty (expression)) {
86 int subidx = expression.Length;
88 if (expression.EndsWith (".providername", StringComparison.InvariantCultureIgnoreCase)) {
89 wantsProviderName = true;
91 } else if (expression.EndsWith (".connectionstring", StringComparison.InvariantCultureIgnoreCase))
94 connStringName = expression.Substring (0, subidx);
97 return new Pair (connStringName, wantsProviderName);
100 public override bool SupportsEvaluate {