Script Nant et targets non executés

Bonjour,

J'ai fait un script nant mais je n'ai que la partie <exec> qui s'execute. Pourquoi les autres targerts ne sont pas pris en compte ?
Code:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
 
<?xml version="1.0"?>
<project name="MonWebSite" default="build" basedir="." xmlns="http://nant.sf.net/release/0.86-beta1/nant.xsd">
 
  <property name="BaseDir" value = "..\" />
  <property name="DeployWeb" value="${BaseDir}\Deploy\"   />
  <property name="SolutionName" value="MonWebSite\MonWebSite.sln" />
  <property name="SolutionPath" value="C:\VS_Solution\" />
  <property name="aspx.dir" value="${BaseDir}\WebSite\" />
  <property name="build.dir" value="C:\VS_Solution\MonWebSite\WebSite\bin\" />
  <property name="BuildType" value="Debug" />
  <property name="msbuildArgs" value='/p:Configuration=${BuildType} /p:Platform="Any CPU"' />
 
 
 
  <target name="clean" description="Suppression du repertoire \deploy">
    <delete dir="${DeployWeb}" failonerror="false" />
    <mkdir dir="${DeployWeb}" failonerror="false" />
  </target>
 
  <target name="build" description="Compilation of the solution">
    <exec
            program="C:\WINDOWS\Microsoft.NET\Framework\v3.5\MSBuild.exe"
            commandline="${SolutionPath}${SolutionName} ${msbuildArgs}"
            verbose="false"
            useruntimeengine="true"
            >
    </exec>
  </target>
 
  <target name="DeletePDB" depends="build">
    <delete>
      <fileset basedir="${build.dir}">
        <include name="*.pdb" />
      </fileset>
    </delete>
  </target>
 
  <target name="copyBuild" description="copy build to \deploy">
    <copy todir="C:\VS_Solution\MonWebSite\Deploy">
      <fileset basedir="${build.dir}">
        <include name="*.dll" />
      </fileset>
    </copy>
  </target>
 
</project>