How do I add a "using System;" statement to a c# file?

Solved. This did the trick:

/// /// Ensures the namespace exists. /// /// The file. /// Name of the namespace.]]>
public static void EnsureNamespaceExists(ICSharpFile file, String namespaceName)
{
Boolean namespaceExists = false;
String usingStatement = String.Format(CultureInfo.InvariantCulture, "using {0};", namespaceName);

// Loop through the existing imports
foreach (IUsingDirective directive in file.Imports)
{
// Check if the using directive is the one we are looking for
if (directive.GetText() == usingStatement)
{
// The namespace is already imported.
namespaceExists = true;

break;
}
}

// Check if the namespace already exists
if (namespaceExists == false)
{
// We need to add the namespace

// Create the new using statement
IUsingDirective directive =
CSharpElementFactory.GetInstance(file.GetProject()).CreateUsingDirective(namespaceName, null);

// Add it to the file
UsingUtil.AddImportTo(file, directive);
}
}

Edited by: Rory Primrose on Jul 4, 2008 2:30 PM

It is incorrect to compare using's by their text (because of different
formatting, comments, and so on).
Better way is try to cast IUsingDirective to IUsingNamespaceDirective and
then get the imported namespace

--
Eugene Pasynkov
Developer
JetBrains, Inc
http://www.jetbrains.com
"Develop with pleasure!"
"Rory Primrose" <no_reply@jetbrains.com> wrote in message
news:33385788.83791215145846371.JavaMail.jive@app4.labs.intellij.net...

Solved. This did the trick:

>

/// <summary>
/// Ensures the namespace exists.
/// </summary>
/// <param name="file">The file.</param>
/// <param name="namespaceName">Name of the namespace.</param>
public static void EnsureNamespaceExists(ICSharpFile file, String
namespaceName)
{
Boolean namespaceExists = false;
String usingStatement =
String.Format(CultureInfo.InvariantCulture, "using {0};", namespaceName);

>

// Loop through the existing imports
foreach (IUsingDirective directive in file.Imports)
{
// Check if the using directive is the one we are looking
for
if (directive.GetText() == usingStatement)
{
// The namespace is already imported.
namespaceExists = true;

>

break;
}
}

>

// Check if the namespace already exists
if (namespaceExists == false)
{
// We need to add the namespace

>

// Create the new using statement
IUsingDirective directive =

CSharpElementFactory.GetInstance(file.GetProject()).CreateUsingDirective(namespaceName,
null);

>

// Add it to the file
UsingUtil.AddImportTo(file, directive);
}
}

>

Edited by: Rory Primrose on Jul 4, 2008 2:30 PM

Thanks Eugene. The function now looks like this:

/// /// Ensures the namespace exists. /// /// The file. /// Name of the qualified namespace.]]>
public static void EnsureNamespaceExists(ICSharpFile file, String qualifiedNamespaceName)
{
Boolean namespaceExists = false;

// Loop through the existing imports
foreach (IUsingDirective directive in file.Imports)
{
IUsingNamespaceDirective namespaceDirective = directive as IUsingNamespaceDirective;

// We we could convert the type, skip to the next item
if (namespaceDirective == null
|| namespaceDirective.ImportedNamespace == null)
{
continue;
}

// Check if the using directive is the one we are looking for
if (namespaceDirective.ImportedNamespace.QualifiedName == qualifiedNamespaceName)
{
// The namespace is already imported.
namespaceExists = true;

break;
}
}

// Check if the namespace already exists
if (namespaceExists == false)
{
// We need to add the namespace

// Create the new using statement
IUsingDirective directive =
CSharpElementFactory.GetInstance(file.GetProject()).CreateUsingDirective(qualifiedNamespaceName, null);

// Add it to the file
UsingUtil.AddImportTo(file, directive);
}
}