第一、圖片上傳，代碼如下：
xxx.aspx
復(fù)制代碼 代碼如下:
td class="style1">
asp:FileUpload ID="FileUpload1" runat="server" />
asp:Button ID="Button1" runat="server" Text="上傳一般圖片" onclick="Button1_Click" />
/td>
td class="style3">
asp:Image ID="Image1" runat="server" Height="200px" Width="200px" />
/td>
xxx.aspx.cs
復(fù)制代碼 代碼如下:
protected void Button1_Click(object sender, EventArgs e)
{
for (int i = 0; i Request.Files.Count; i++)
{
HttpPostedFile file = Request.Files[i];
if (file.ContentLength > 0)
{
if (file.ContentType.Contains("image/"))
{
using (System.Drawing.Image img = System.Drawing.Image.FromStream(file.InputStream))
{
string FileName = System.IO.Path.GetFileName(file.FileName);
string[] SplitFileName = FileName.Split('.');
string AtterFileName = DateTime.Now.ToString("yyyMMddHHmmss")+"." + SplitFileName[1];
img.Save(Server.MapPath("/upload/" + AtterFileName));
this.Image1.ImageUrl = "upload/" + AtterFileName;
}
}
else
{
Response.Write("script>alert('該文件不是圖片格式！');/script>");
}
}
else
{
Response.Write("script>alert('請選擇要上傳的圖片');/script>");
}
}
}
第二、添加文字水印的圖片上傳，代碼如下：
xxx.aspx
復(fù)制代碼 代碼如下:
td class="style1">
asp:FileUpload ID="FileUpload2" runat="server" />
asp:Button ID="Button2" runat="server" Text="上傳文字圖片" onclick="Button2_Click" />
/td>
td>
asp:Image ID="Image2" runat="server" Height="200px" Width="200px" />
/td>
xxx.aspx.cs
復(fù)制代碼 代碼如下:
protected void Button2_Click(object sender, EventArgs e)
{
for (int i = 0; i Request.Files.Count; i++)
{
HttpPostedFile file = Request.Files[i];
if (file.ContentLength > 0)
{
if (file.ContentType.Contains("image/"))
{
using (System.Drawing.Image img = System.Drawing.Image.FromStream(file.InputStream))
{
using (Graphics g = Graphics.FromImage(img))
{
g.DrawString("我的圖片", new Font("宋體", 14), Brushes.Red, 0, 0);
}
string FileName = System.IO.Path.GetFileName(file.FileName);
string[] SplitFileName = FileName.Split('.');
string AtterFileName = DateTime.Now.ToString("yyyMMddHHmmss") + "." + SplitFileName[1];
img.Save(Server.MapPath("/upload/" + AtterFileName));
this.Image2.ImageUrl = "upload/" + AtterFileName;
}
}
else
{
Response.Write("script>alert('該文件不是圖片格式！');/script>");
}
}
else
{
Response.Write("script>alert('請選擇要上傳的圖片');/script>");
}
}
}
第三、添加圖片水印的圖片上傳，代碼如下：
xxx.aspx
復(fù)制代碼 代碼如下:
td class="style1">
asp:FileUpload ID="FileUpload3" runat="server" />
asp:Button ID="Button3" runat="server" Text="上傳水印圖片" onclick="Button3_Click" />
/td>
td>
asp:Image ID="Image3" runat="server" Height="200px" Width="200px" />
/td>
xxx.aspx.cs
復(fù)制代碼 代碼如下:
protected void Button3_Click(object sender, EventArgs e)
{
for (int i = 0; i Request.Files.Count; i++)
{
HttpPostedFile file = Request.Files[i];
if (file.ContentLength > 0)
{
if (file.ContentType.Contains("image/"))
{
string fileName = file.FileName;
using (System.Drawing.Image img = System.Drawing.Image.FromStream(file.InputStream))
{
using (System.Drawing.Image imgWater = System.Drawing.Image.FromFile(Server.MapPath("/img/czlogo.jpg")))
{
using (Graphics g = Graphics.FromImage(img))
{
g.DrawImage(imgWater, 0, 0);
}
string[] SplitFileName = fileName.Split('.');
string AtterFileName = DateTime.Now.ToString("yyyMMddHHmmss") + "." + SplitFileName[1];
img.Save(Server.MapPath("/upload/" + AtterFileName));
this.Image3.ImageUrl = "upload/" + AtterFileName;
}
}
}
else
{
Response.Write("script>alert('該文件不是圖片格式！');/script>");
}
}
else
{
Response.Write("script>alert('請選擇要上傳的圖片');/script>");
}
}
}
第四、上傳圖片濃縮圖，代碼如下：
xxx.aspx
復(fù)制代碼 代碼如下:
td class="style1">
asp:FileUpload ID="FileUpload4" runat="server" />
asp:Button ID="Button4" runat="server" Text="上傳濃縮圖片" onclick="Button4_Click" />
/td>
td>
asp:Image ID="Image4" runat="server" Height="200px" Width="200px" />
/td>
xxx.aspx.cs
復(fù)制代碼 代碼如下:
protected void Button4_Click(object sender, EventArgs e)
{
for (int i = 0; i Request.Files.Count; i++)
{
HttpPostedFile file = Request.Files[i];
if (file.ContentLength > 0)
{
if (file.ContentType.Contains("image/"))
{
using (System.Drawing.Image img = System.Drawing.Image.FromStream(file.InputStream))
{
using (System.Drawing.Image imgThumb = new Bitmap(200, 100))
{
using (Graphics g = Graphics.FromImage(imgThumb))
{
g.DrawImage(img, new Rectangle(0, 0, imgThumb.Width, imgThumb.Height), new Rectangle(0, 0, img.Width, img.Height), GraphicsUnit.Pixel);
}
string fileName = file.FileName;
string[] SplitFileName = fileName.Split('.');
string AtterFileName = DateTime.Now.ToString("yyyMMddHHmmss") + "." + SplitFileName[1];
img.Save(Server.MapPath("/upload/" + AtterFileName));
this.Image4.ImageUrl = "upload/" + AtterFileName;
}
}
}
else
{
Response.Write("script>alert('該文件不是圖片格式！');/script>");
}
}
else
{
Response.Write("script>alert('請選擇要上傳的圖片');/script>");
}
}
}
您可能感興趣的文章:- JQuery.uploadify 上傳文件插件的使用詳解 for ASP.NET
- asp.net+FCKeditor上傳圖片顯示叉叉圖片無法顯示的問題的解決方法
- asp.net fileupload控件上傳文件與多文件上傳
- asp.net(c#)開發(fā)中的文件上傳組件uploadify的使用方法（帶進(jìn)度條）
- asp.net MVC實(shí)現(xiàn)無組件上傳圖片實(shí)例介紹
- asp.net 多文件上傳，兼容IE6/7/8，提供完整代碼下載
- Asp.net實(shí)現(xiàn)MVC處理文件的上傳下載功能實(shí)例教程
- Asp.Net 無刷新文件上傳并顯示進(jìn)度條的實(shí)現(xiàn)方法及思路
- asp.net下文件上傳和文件刪除的代碼
- ASP.NET MVC Webuploader實(shí)現(xiàn)上傳功能
