知识大全 ASP+上传文件语法

Posted 2022-07-21 语法

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　　这里有一个怎样用ASP+上传文件的非常简单例子

　　<HTML>

　　Sub UploadBtn_Click(Sender as Object E as EventArgs)

　　UploadFile PostedFile SaveAs(Server MapPath( test jpg ))

　　MyImage ImageUrl = test jpg

　　MyImage Visible = true

　　End Sub

　　</script>

　　<body>

　　<h >

　　选择上传文件: <input id= UploadFile type=file runat=server>

　　<asp:button Text= Upload Me! OnClick= UploadBtn_Click runat=server/>

　　<hr>

　　<asp:image id= MyImage Visible=false runat=server/>

　　</form>

　　</body>

　　</>

　　Here is a more plex example which enables you to upload a file and then using the System Drawing APIs

　　to resize/crop the image overlay a custom text message onto the image and then save it back out to disk

　　as a jpg (note that this sample works with *any* browser) I ve written this one in C# but you would

　　obviously be able to use VB or JScript to do it as well:

　　<%@ Import Namespace= System IO %>

　　<%@ Import Namespace= System Drawing %>

　　<%@ Import Namespace= System Drawing Imaging %>

　　void UploadBtn_Click(Object sender EventArgs e)

　　UploadFile PostedFile SaveAs(Server MapPath( test jpg ));

　　ImageEditor Visible = true;

　　void UpdateBtn_Click(Object sender EventArgs e)

　　System Drawing Image image = System Drawing Image FromFile(Server MapPath( test jpg ));

　　System Drawing Image newimage = new Bitmap(image Width image Height PixelFormat Format bppRGB);

　　Graphics g = Graphics FromImage(newimage);

　　g DrawImage(image image Width image Height);

　　Font f = new Font( Lucida Sans Unicode Int Parse(FontSize SelectedItem Text));

　　Brush b = new SolidBrush(Color Red);

　　g DrawString(Caption Text f b );

　　g Dispose();

　　System Drawing Image thumbImage = newimage GetThumbnailImage(Int Parse(Width Text) Int Parse

　　(Height Text) null );

　　image Dispose();

　　thumbImage Save(Server MapPath( test jpg ) ImageFormat JPEG);

　　</script>

　　<body>

　　<h >

　　Select File To Upload: <input id= UploadFile type=file runat=server>

　　<asp:button Text= Upload Me! OnClick= UploadBtn_Click runat=server/>

　　<hr>

　　<asp:panel id= ImageEditor Visible=false runat=server>

　　<h >

　　Image Width: <asp:textbox id= Width runat=server/>

　　Image Height: <asp:textbox id= Height runat=server/> <br>

　　Text Caption: <asp:textbox id= Caption runat=server/>

　　Caption Size: <asp:dropdownlist id= FontSize runat=server>

　　<asp:listitem> </asp:listitem>

　　</asp:dropdownlist>

　　<asp:button Text= Update Image OnClick= UpdateBtn_Click runat=server/>

　　</h >

　　</asp:panel>

　　</form>

　　</body>

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