ASP.NET Tutorial/File Directory/DirectoryInfo
Содержание
Binding a GridView to directory files (C#)
<source lang="csharp">
<%@ Page Language="C#" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <script runat="server">
protected void Page_Load(object sender, EventArgs e)
{
foreach (System.IO.DriveInfo drive in System.IO.DriveInfo.GetDrives())
{
TreeNode node = new TreeNode();
node.Value = drive.Name;
if (drive.IsReady)
node.Text = drive.Name + " - (free space: " + drive.AvailableFreeSpace + ")";
else
node.Text = drive.Name + " - (not ready)";
this.TreeView1.Nodes.Add(node);
}
}
private void LoadDirectories(TreeNode parent, string path)
{
System.IO.DirectoryInfo directory = new System.IO.DirectoryInfo(path);
try
{
foreach (System.IO.DirectoryInfo d in directory.GetDirectories())
{
TreeNode node = new TreeNode(d.Name, d.FullName);
parent.ChildNodes.Add(node);
LoadDirectories(node, d.FullName);
}
}
catch (System.UnauthorizedAccessException e)
{
parent.Text += " (Access Denied)";
}
catch (Exception e)
{
parent.Text += " (Unknown Error: " + e.Message + ")";
}
}
protected void TreeView1_SelectedNodeChanged(object sender, EventArgs e)
{
System.IO.DirectoryInfo directory = new System.IO.DirectoryInfo(this.TreeView1.SelectedNode.Value);
this.GridView1.DataSource = directory.GetFiles();
this.GridView1.DataBind();
}
</script> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server">
<title>Untitled Page</title>
</head> <body>
<form id="form1" runat="server">
<asp:TreeView ID="TreeView1"
runat="server"
OnSelectedNodeChanged="TreeView1_SelectedNodeChanged">
</asp:TreeView>
|
<asp:GridView ID="GridView1"
runat="server"
AutoGenerateColumns="False"
GridLines="None" CellPadding="3">
<Columns>
<asp:BoundField DataField="Name" HeaderText="Name"
HeaderStyle-HorizontalAlign="Left"
HeaderStyle-Font-Bold="true" />
<asp:BoundField DataField="Length" HeaderText="Size"
ItemStyle-HorizontalAlign="Right"
HeaderStyle-HorizontalAlign="Right"
HeaderStyle-Font-Bold="true" />
<asp:BoundField DataField="LastWriteTime"
HeaderText="Date Modified"
HeaderStyle-HorizontalAlign="Left"
HeaderStyle-Font-Bold="true" />
</Columns>
</asp:GridView>
|
</form>
</body> </html></source>
Binding a GridView to directory files (VB)
<source lang="csharp">
<%@ Page Language="VB" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <script runat="server">
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
For Each drive As System.IO.DriveInfo In System.IO.DriveInfo.GetDrives()
Dim node As TreeNode = New TreeNode()
node.Value = drive.Name
If (drive.IsReady) Then
node.Text = drive.Name & " - (free space: " & drive.AvailableFreeSpace & ")"
LoadDirectories(node, drive.Name)
Else
node.Text = drive.Name & " - (not ready)"
End If
Me.TreeView1.Nodes.Add(node)
Next
Me.TreeView1.CollapseAll()
End Sub
Private Sub LoadDirectories(ByVal parent As TreeNode, ByVal path As String)
Dim directory As System.IO.DirectoryInfo = New System.IO.DirectoryInfo(path)
Try
For Each d As System.IO.DirectoryInfo In directory.GetDirectories()
Dim node As TreeNode = New TreeNode(d.Name, d.FullName)
parent.ChildNodes.Add(node)
LoadDirectories(node, d.FullName)
Next
Catch ex As System.UnauthorizedAccessException
parent.Text += " (Access Denied)"
Catch ex As Exception
parent.Text += " (Unknown Error: " + ex.Message + ")"
End Try
End Sub
Protected Sub TreeView1_SelectedNodeChanged _
(ByVal sender As Object, ByVal e As System.EventArgs)
Dim directory As System.IO.DirectoryInfo = New System.IO.DirectoryInfo(Me.TreeView1.SelectedNode.Value)
Me.GridView1.DataSource = directory.GetFiles()
Me.GridView1.DataBind()
End Sub
</script> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server">
<title>Untitled Page</title>
</head> <body>
<form id="form1" runat="server">
<asp:TreeView ID="TreeView1" runat="server"
OnSelectedNodeChanged="TreeView1_SelectedNodeChanged">
</asp:TreeView>
|
<asp:GridView ID="GridView1" runat="server"
AutoGenerateColumns="False" GridLines="None" CellPadding="3">
<Columns>
<asp:BoundField DataField="Name" HeaderText="Name"
HeaderStyle-HorizontalAlign="Left"
HeaderStyle-Font-Bold="true" />
<asp:BoundField DataField="Length" HeaderText="Size"
ItemStyle-HorizontalAlign="Right"
HeaderStyle-HorizontalAlign="Right"
HeaderStyle-Font-Bold="true" />
<asp:BoundField DataField="LastWriteTime"
HeaderText="Date Modified"
HeaderStyle-HorizontalAlign="Left"
HeaderStyle-Font-Bold="true" />
</Columns>
</asp:GridView>
|
</form>
</body> </html></source>
Manually enumerating directory files (C#)
<source lang="csharp">
<%@ Page Language="C#" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <script runat="server">
protected void Page_Load(object sender, EventArgs e)
{
System.IO.DirectoryInfo dir = new System.IO.DirectoryInfo(@"C:\");
foreach (System.IO.FileInfo file in dir.GetFiles("*.*"))
{
Response.Write(file.Name + "
");
Response.Write(file.LastWriteTime.ToString() + "
");
Response.Write(file.Attributes.ToString() + "
");
}
}
</script> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server">
<title>Untitled Page</title>
</head> <body>
<form id="form1" runat="server">
</form>
</body> </html></source>
Manually enumerating directory files (VB)
<source lang="csharp">
<%@ Page Language="VB" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <script runat="server">
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
Dim dir As System.IO.DirectoryInfo = New System.IO.DirectoryInfo("C:\")
For Each file As System.IO.FileInfo In dir.GetFiles("*.*")
Response.Write(file.Name & "
")
Response.Write(file.LastWriteTime.ToString() & "
")
Response.Write(file.Attributes.ToString() & "
")
Next
End Sub
</script> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server">
<title>Untitled Page</title>
</head> <body>
<form id="form1" runat="server">
</form>
</body> </html></source>
