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Overview
This topic will guide you on how to change the background image of any asp.net
web page by using a file upload control.
Steps
1. Initially you have to make one new folder named "pics" in solution
explorer and put any image there and rename the image to "back.jpeg".
2. Go to the HTML SOURCE (Default.aspx) page and add the following lines
of code to the <body> tag.
<body
id="bb"
runat="server">
3. In the Code-Behind file (Default.aspx.cs) declare a static string
variable under the class Default.
public
partial class
_Default : System.Web.UI.Page
{
static string
st;
4. In page load initialize the string to
the name and location of the image of in the folder("pics") that we added in
step
protected
void Page_Load(object
sender, EventArgs e)
{
st = Server.MapPath("~/pics/") +
"back.jpeg";
}
5. Now In the Desighn view of the page drag one button and one fileupload
control.
6. Under the button click event write the following lines of code to overwrite
the existing image to the image being uploaded.
protected
void Button1_Click(object
sender, EventArgs e)
{
File.Copy(FileUpload1.PostedFile.FileName.ToString(),
st, true);
bb.Attributes.Add("BackGround", st);
}
That's it. Now
your page background image will be set to the new image.
Summary
This article tells you on how to change the background image of an ASP.net web
page to any image by using a fileupload control.
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