Hi
How can i resize an image before uploading and saving to database to the size im showing in my application.How will i accomplish this.
fawadkhalil 0 Junior Poster in Training
Dhaneshnm 9 Junior Poster in Training
You can use image class and GetThumbnailImage() method to resize
the image.
fawadkhalil 0 Junior Poster in Training
Can u please explain how to use these methods?
Dhaneshnm 9 Junior Poster in Training
My aspx page
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Image Resizing Demo</title>
</head>
<body>
<form id="form1" runat="server" action="Default.aspx" method="post">
<div>
<asp:FileUpload ID="Selectedfile" runat="server" />
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click1"/>
</div>
</form>
</body>
</html>Now the important parts of code behind,
public bool ThumbnailCallback()
{
return false;
}
protected void Button1_Click1(object sender, EventArgs e)
{
System.Drawing.Image.GetThumbnailImageAbort myCallBack
= new System.Drawing.Image.GetThumbnailImageAbort(ThumbnailCallback);
System.Drawing.Image im = System.Drawing.Image.FromStream(Selectedfile.FileContent);
System.Drawing.Image smallim = im.GetThumbnailImage(20, 20, myCallBack, IntPtr.Zero);/*put what ever size you want instead of first
two parameters,they stand for width and height*/
}Code is in c#.But functionality wont differ in vb.
Dhaneshnm 9 Junior Poster in Training
On more thing,resizing the height/width will reduce the size in bytes accordingly
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