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. NET upload image plus text and watermark image source code

Source: Internet
Author: User
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Copy the following code and create an UPLOAD folder and an LZ. jpg image in the same directory.


. Aspx File

<% @ Page language = "c #" Codebehind = "35cnnet. aspx. cs" AutoEventWireup = "false" Inherits = "uploadfiles.35cnnet" %>
<! Doctype html public "-// W3C // dtd html 4.0 Transitional // EN">
<HTML>
<HEAD>
<Title> MikeCat_WaterMark </title>
<Meta name = "GENERATOR" Content = "Microsoft Visual Studio. NET 7.1">
<Meta name = "CODE_LANGUAGE" Content = "C #">
<Meta name = "vs_defaultClientScript" content = "JavaScript">
<Meta name = "vs_targetSchema" content = "http://schemas.microsoft.com/intellisense/ie5">
</HEAD>
<Body MS_POSITIONING = "GridLayout">
<Form id = "Form1" method = "post" runat = "server">
<INPUT id = "File1" style = "Z-INDEX: 101; LEFT: 144px; WIDTH: 400px; POSITION: absolute; TOP: 88px;

HEIGHT: 22px"
Type = "file" size = "47" name = "File1" runat = "server">
<Asp: Button id = "Button1" style = "Z-INDEX: 102; LEFT: 176px; POSITION: absolute; TOP: 136px"

Runat = "server"
Text = "upload and add a Text watermark"> </asp: Button>
<Asp: Button id = "Button2" style = "Z-INDEX: 103; LEFT: 352px; POSITION: absolute; TOP: 136px"

Runat = "server"
Text = "upload and add an image watermark"> </asp: Button>
<Asp: RequiredFieldValidator id = "RequiredFieldValidator1" style = "Z-INDEX: 104; LEFT: 552px; POSITION:

Absolute; TOP: 88px"
Runat = "server" ErrorMessage = "*" ControlToValidate = "File1"> </asp: RequiredFieldValidator>
<DIV style = "Z-INDEX: 105; LEFT: 16px; WIDTH: 100%; POSITION: absolute; TOP: 168px; HEIGHT: 100px"
Ms_positioning = "GridLayout">
<Asp: Image id = "Image1" style = "Z-INDEX: 107; LEFT: 56px; POSITION: absolute; TOP: 16px"

Runat = "server"
ImageAlign = "Middle"> </asp: Image> </DIV>
<Asp: Label id = "Label1" style = "Z-INDEX: 107; LEFT: 176px; POSITION: absolute; TOP: 40px"

Runat = "server"> Design-upload an image and add a watermark </asp: Label>
</Form>
</Body>
</HTML>

. Cs File

Using System;
Using System. Collections;
Using System. ComponentModel;
Using System. Data;
Using System. Drawing;
Using System. Web;
Using System. Web. SessionState;
Using System. Web. UI;
Using System. Web. UI. WebControls;
Using System. Web. UI. HtmlControls;
Using System. IO;

Namespace uploadfiles
{

Public class 35 cnnet: System. Web. UI. Page
{
Protected System. Web. UI. WebControls. Button Button1;
Protected System. Web. UI. HtmlControls. HtmlInputFile File1;
Protected System. Web. UI. WebControls. Image Image1;
Protected System. Web. UI. WebControls. RequiredFieldValidator RequiredFieldValidator1;
Protected System. Web. UI. WebControls. Label Label1;
Protected System. Web. UI. WebControls. Button Button2;

Private void Page_Load (object sender, System. EventArgs e)
{
// Place user code here to initialize the page
If (! Page. IsPostBack)
{
Image1.ImageUrl = "aa.gif ";
}
}

# Code generated by region Web Form Designer
Override protected void OnInit (EventArgs e)
{
//
// CODEGEN: This call is required by the ASP. NET Web form designer.
//
InitializeComponent ();
Base. OnInit (e );
}

/// <Summary>
/// The designer supports the required methods-do not use the code editor to modify
/// Content of this method.
/// </Summary>
Private void InitializeComponent ()
{
This. Button1.Click + = new System. EventHandler (this. button#click );
This. Button2.Click + = new System. EventHandler (this. Button2_Click );
This. Load + = new System. EventHandler (this. Page_Load );

}
# Endregion

Private void button#click (object sender, System. EventArgs e)
{
If (File1.PostedFile. FileName. Trim ()! = "")
{
// Upload a file
String extension = Path. GetExtension (File1.PostedFile. FileName). ToLower ();
String fileName = DateTime. Now. ToString ("yyyyMMddhhmmss ");
String path = Server. MapPath (".") + "/upload/" + fileName + extension;
File1.PostedFile. SaveAs (path );

// Add a text watermark. Note that the code here cannot coexist with the image watermark code below.
System. Drawing. Image image = System. Drawing. Image. FromFile (path );
Graphics g = Graphics. FromImage (image );
G. DrawImage (image, 0, 0, image. Width, image. Height );
Font f = new Font ("Verdana", 16 );
Brush B = new SolidBrush (Color. Blue );
String addText = "Hundred Percent design ";
G. DrawString (addText, f, B, 10, 10 );
G. Dispose ();

// Save the watermark image and delete the original image
String newPath = Server. MapPath (".") + "/upload/" + fileName + "_ new" + extension;
Image. Save (newPath );
Image. Dispose ();
If (File. Exists (path ))
{
File. Delete (path );
}

Image1.ImageUrl = newPath;
// Response. Redirect (newPath );
}

}

Private void Button2_Click (object sender, System. EventArgs e)
{
// Upload a file
String extension = Path. GetExtension (File1.PostedFile. FileName). ToUpper ();
String fileName = DateTime. Now. ToString ("yyyyMMddhhmmss ");
String path = Server. MapPath (".") + "/upload/" + fileName + extension;
File1.PostedFile. SaveAs (path );

// Add an image watermark
System. Drawing. Image image = System. Drawing. Image. FromFile (path );
System. Drawing. Image copyImage = System. Drawing. Image. FromFile (Server. MapPath (".") + "/lz.jpg ");
Graphics g = Graphics. FromImage (image );
G. DrawImage (copyImage, new Rectangle (image. Width-copyImage.Width, image. Height-copyImage.Height,

CopyImage. Width, copyImage. Height), 0, 0, copyImage. Width, copyImage. Height, GraphicsUnit. Pixel );
G. Dispose ();

// Save the watermark image and delete the original image
String newPath = Server. MapPath (".") + "/upload/" + fileName + "_ new" + extension;
Image. Save (newPath );
Image. Dispose ();
If (File. Exists (path ))
{
File. Delete (path );
}

Image1.ImageUrl = newPath;
}
}
}

 

From: http://www.studycs.com/html/523.html

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
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