Can NuGet edit a config file or only add to it?

Question

I\'ve been working on a NuGet package for my company and one of the requirements is being able to update some of our config files.

I know it\'s possible to add to a

Answer 1

Yes, it's possible, but you have to include install.ps1 file into tools folder. And then when you will get your package from nuget server, visual studio run Powershell scripts. I use this script

# fileName can be App.Config Or Web.Config or something else 
$fileName = "App.Config" 
$file=$project.ProjectItems.Item($fileName)

if($file.Properties){
    # Get localpath
    $localPath = $file.Properties.Item("LocalPath")
    if($localPath){
        $localPath = $localPath.Value   
    }
}

if ($localPath -eq $null) {
    Exit
}

#Load our config file as XML file
[xml]$file = Get-Content $localPath
if($file){

    # Create node 
    $childNode = $file.CreateElement("add")
    $childNode.SetAttribute("connectionString", "DataSource=.\;InitialCatalog=GVE;User ID=ex;Password=example")

    #Get parent node   
    $node = $file.SelectSingleNode("configuration/connectionStrings")

    #Insert our node into parent
    $node.AppendChild($childNode)

    $file.Save($localPath)
}