VirtualFile(String) Constructor

Definition

Namespace:

System.Web.Hosting

Assembly:

System.Web.dll

Initializes a new instance of the VirtualFile class.

protected:
 VirtualFile(System::String ^ virtualPath);

protected VirtualFile (string virtualPath);

new System.Web.Hosting.VirtualFile : string -> System.Web.Hosting.VirtualFile

Protected Sub New (virtualPath As String)

Parameters

virtualPath

String

The virtual path to the resource represented by this instance.

Examples

The following code example is an implementation of the VirtualFile constructor that retrieves virtual file information from a DataSet object provided by a custom VirtualPathProvider object. For the full code required to run the example, see the Example section of the VirtualFile class overview.

public SampleVirtualFile(string virtualPath, SamplePathProvider provider)
  : base(virtualPath)
{
  this.spp = provider;
  GetData();
}

protected void GetData()
{
  // Get the data from the SamplePathProvider
  DataSet ds = spp.GetVirtualData();

  // Get the virtual file from the resource table.
  DataTable files = ds.Tables["resource"];
  DataRow[] rows = files.Select(
    String.Format("(name = '{0}') AND (type='file')", this.Name));

  // If the select returned a row, store the file contents.
  if (rows.Length > 0)
  {
    DataRow row = rows[0];

    content = row["content"].ToString();
  }
}

Public Sub New(ByVal virtualPath As String, ByVal provider As SamplePathProvider)
  MyBase.New(virtualPath)
  spp = provider
  GetData()
End Sub

Protected Sub GetData()
  ' Get the data from the SamplePathProvider.
  Dim spp As SamplePathProvider
  spp = CType(HostingEnvironment.VirtualPathProvider, SamplePathProvider)

  Dim ds As DataSet
  ds = spp.GetVirtualData

  ' Get the virtual file data from the resource table.
  Dim files As DataTable
  files = ds.Tables("resource")

  Dim rows As DataRow()
  rows = files.Select( _
    String.Format("(name='{0}') AND (type='file')", Me.Name))

  ' If the select returned a row, store the file contents.
  If (rows.Length > 0) Then
    Dim row As DataRow
    row = rows(0)

    content = row("content").ToString()
  End If
End Sub