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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>
<script language="vb" runat=server>
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>
<form enctype="multipart/form-data" runat=server>
<h3>
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>
</html>
here is a more complex 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). ive 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" %>
<html>
<script language="c#" runat=server>
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.format32bpprgb);
graphics g = graphics.fromimage(newimage);
g.drawimage(image,0,0,image.width,image.height);
font f = new font("lucida sans unicode", int32.parse(fontsize.selecteditem.text));
brush b = new solidbrush(color.red);
g.drawstring(caption.text, f, b, 10, 140);
g.dispose();
system.drawing.image thumbimage = newimage.getthumbnailimage(int32.parse(width.text),int32.parse
(height.text),null,0);
image.dispose();
thumbimage.save(server.mappath("test.jpg"), imageformat.jpeg);
}
</script>
<body>
<form enctype="multipart/form-data" runat=server>
<h3>
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>
<img src="test.jpg">
<h3>
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>14</asp:listitem>
<asp:listitem>18</asp:listitem>
<asp:listitem>26</asp:listitem>
<asp:listitem>36</asp:listitem>
<asp:listitem>48</asp:listitem>
<asp:listitem>62</asp:listitem>
</asp:dropdownlist>
<asp:button text="update image" onclick="updatebtn_click" runat=server/>
</h3>
</asp:panel>
</form>
</body>
</html>
