C# .NET GridView数据导出Execl带图片一起
C# .NET 平台
把using Insus.NET;放到 Bin后，
在后台引用：using Insus.NET;
.NET 前端，
记住要使用html 写法，不然如果图片名包含中文会显示解码过的路径的，显示解码过的路径Insus是识别不了的，如上面写法
Insus 也要使用全地址的写法，https也不能识别的，所以我也处理过图片地址的
//读取记录在数据库的指定路径
protected string GetUrl(object No,object key)
{
string str = "";
string urlKey = "";
bll = new OrderProgressBll();
if (No == null || No.ToString().Length == 0 || key.ToString().Trim().Length == 0 || key == null) { }else
urlKey = No.ToString().Trim() + "_" + key.ToString().Trim();
List
if (images != null)
{
if(images.Count >0)
str = @"/Rnfiles/" + images[0].Trim();
if (Request.Url.ToString().ToUpper().IndexOf("YSUN") > 0)
{
if (Request.Url.ToString().IndexOf("9988") < 1) //9988是端口号，S是表示缩略图的图片名
{
str = Request.Url.ToString().ToUpper().Replace("S", "").Split('/')[0] + "//" + Request.Url.ToString().Split('/')[2] + ":9988/" + str;
}
else
{
str = Request.Url.ToString().ToUpper().Replace("S", "").Split('/')[0] + "//" + Request.Url.ToString().Split('/')[2] + "/" + str;
}
}
else
{
str = Request.Url.ToString().ToUpper().Replace("S", "").Split('/')[0] + "//" + Request.Url.ToString().Split('/')[2] + "/" + str;
}
}
return str;
}
在导出的时候我是这样子写的，GridView分页先展开，导出成EXECL 后再设分页
///
/// 订单进度导出
///
///
///
protected void btn_export_Click(object sender, EventArgs e)
{
if (IsMasterView)
{
PrintStatus = 5;
InsusExportToExcel objToexecl = new InsusExportToExcel();
gvMasterList.Visible = false;
gvMasterList.AllowPaging = false;
SetColVisible(mainEditColIndex, false, gvMasterList);
BindgvMaster(0);
objToexecl.ExportToExcel(gvMasterList, "主计划" + DateTime.Now.ToShortDateString());
//GftBase.GridViewToExcel(Response, DateTime.Now.ToShortDateString().ToString()+ "OrderPO", gvMasterList);
SetColVisible(mainEditColIndex, true, gvMasterList);
gvMasterList.AllowPaging = true;
gvMasterList.Visible = false;
PrintStatus = -1;
}
}
导出一图片有大有小，最好在上传的时候定义生好一个副图缩略图，我是用以下方便生成的（数据库记录了主图路径，缩略图只记录命名规则即可）
/**/
///
/// 生成缩略图
///
/// 源图路径（物理路径）
/// 缩略图路径（物理路径）
/// 缩略图宽度
/// 缩略图高度
/// 生成缩略图的方式
public static void MakeThumbnail(string originalImagePath, string thumbnailPath, int width, int height, string mode)
{
System.Drawing.Image originalImage = System.Drawing.Image.FromFile(originalImagePath);
int towidth = width;
int toheight = height;
int x = 0;
int y = 0;
int ow = originalImage.Width;
int oh = originalImage.Height;
switch (mode)
{
case "HW"://指定高宽缩放（可能变形）
break;
case "W"://指定宽，高按比例
toheight = originalImage.Height * width / originalImage.Width;
break;
case "H"://指定高，宽按比例
towidth = originalImage.Width * height / originalImage.Height;
break;
case "Cut"://指定高宽裁减（不变形）
if ((double)originalImage.Width / (double)originalImage.Height > (double)towidth / (double)toheight)
{
oh = originalImage.Height;
ow = originalImage.Height * towidth / toheight;
y = 0;
x = (originalImage.Width - ow) / 2;
}
else
{
ow = originalImage.Width;
oh = originalImage.Width * height / towidth;
x = 0;
y = (originalImage.Height - oh) / 2;
}
break;
default:
break;
}
//新建一个bmp图片
System.Drawing.Image bitmap = new System.Drawing.Bitmap(towidth, toheight);
//新建一个画板
System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bitmap);
//设置高质量插值法
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
//设置高质量,低速度呈现平滑程度
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
//清空画布并以透明背景色填充
g.Clear(System.Drawing.Color.Transparent);
//在指定位置并且按指定大小绘制原图片的指定部分
g.DrawImage(originalImage, new System.Drawing.Rectangle(0, 0, towidth, toheight),
new System.Drawing.Rectangle(x, y, ow, oh),
System.Drawing.GraphicsUnit.Pixel);
try
{
//以jpg格式保存缩略图
bitmap.Save(thumbnailPath, System.Drawing.Imaging.ImageFormat.Jpeg);
}
catch (System.Exception e)
{
throw e;
}
finally
{
originalImage.Dispose();
bitmap.Dispose();
g.Dispose();
}
}
/**/
///
/// 在图片上增加文字水印
///
/// 原服务器图片路径
/// 生成的带文字水印的图片路径
protected void AddShuiYinWord(string Path, string Path_sy)
{
string addText = "测试水印";
System.Drawing.Image image = System.Drawing.Image.FromFile(Path);
System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(image);
g.DrawImage(image, 0, 0, image.Width, image.Height);
System.Drawing.Font f = new System.Drawing.Font("Verdana", 16);
System.Drawing.Brush b = new System.Drawing.SolidBrush(System.Drawing.Color.Blue);
g.DrawString(addText, f, b, 15, 15);
g.Dispose();
image.Save(Path_sy);
image.Dispose();
}
/**/
///
/// 在图片上生成图片水印
///
/// 原服务器图片路径
/// 生成的带图片水印的图片路径
/// 水印图片路径
protected void AddShuiYinPic(string Path, string Path_syp, string Path_sypf)
{
System.Drawing.Image image = System.Drawing.Image.FromFile(Path);
System.Drawing.Image copyImage = System.Drawing.Image.FromFile(Path_sypf);
System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(image);
g.DrawImage(copyImage, new System.Drawing.Rectangle(image.Width - copyImage.Width, image.Height - copyImage.Height, copyImage.Width, copyImage.Height), 0, 0, copyImage.Width, copyImage.Height, System.Drawing.GraphicsUnit.Pixel);
g.Dispose();
image.Save(Path_syp);
image.Dispose();
}
//附件或图片上传
///
/// 文件上传至 D:\RDIMS\RnFiles 路径
///
///
///
protected void btn_Upload_Click(object sender, EventArgs e)
{
try
{
if (Fu_selFile.HasFile)
{
Attachment attm = new Attachment(-1);
DocumentLink link = new DocumentLink(-1, -1);
attm.Dept = SysUser.GetDept(Login.Login_id);
attm.DocMType = SysTypeItems.GetSysTypeItemKey("文档管理分类", "其它资料");
attm.ForHyperLink = true;
link.LinkModule = FunName;
link.LinkModuleNo = RnNo + "_" + RnMKey;
link.LinkKey = RnMKey;
Upload_Bll ulBll = new Upload_Bll();
string relPath = ulBll.CreateFolder(link.LinkModule, link.LinkModuleNo, attm.ForHyperLink);
string absPath = ulBll.GetfilePath(Fu_selFile.FileName, relPath, attm.ForHyperLink);
string s_FileName = ulBll.GetfilePath("s_"+Fu_selFile.FileName, relPath, attm.ForHyperLink);//路图加_s表示缩略图
if (Fu_selFile.FileName.ToUpper().IndexOf(".JPG") > 1 || Fu_selFile.FileName.ToUpper().IndexOf(".JPEG") > 1 || Fu_selFile.FileName.ToUpper().IndexOf(".PNG") > 1 || Fu_selFile.FileName.ToUpper().IndexOf(".GIF") > 1 || Fu_selFile.FileName.ToUpper().IndexOf(".BMP") > 1) { }else
throw new ApplicationException("你上传的不是图片，请上传图片格式文件（jpeg/jpg/gif/bmp）");
if ((Fu_selFile.FileContent.Length / 1024) > 700)
throw new ApplicationException("图片大小不能大于700KB,请使用QQ截图重新截取图片再上传");
if (File.Exists(absPath))
{
MsgShow("文件已存在，上传失败。请选择其它文件");
return;
}
Fu_selFile.SaveAs(absPath);
if (!File.Exists(s_FileName))
{
///webFilePath 服务器图片路径 webFilePath_s 缩略图路径
MakeThumbnail(absPath, s_FileName,50,60, "HW"); // 生成缩略图方法
}
try
{
attm.FileLength = Fu_selFile.FileContent.Length / 1024;
attm.FileType = Upload_Bll.GetFileType(Path.GetExtension(Fu_selFile.FileName));
attm.Path = relPath;
attm.FileName = Fu_selFile.FileName;
attm.UpLoad_By = Login.Login_id;
attm.UpLoad_date = DateTime.Now;
attm.Update_Date = DateTime.Now;
attm.Update_By = Login.Login_id;
attm.Description = "";
link.DocConfirm = false;
attm.company = Login.CompanyCode;
attm.Add(link);
}
catch
{
if (File.Exists(absPath))
{
File.Delete(absPath);
}
throw;
}
MsgShow("上传成功");
BindPictures();
bindfileInfo();
//SetImagesVisible();
}
else
{
MsgShow("请先选择上传的文件");
}
}
catch (ImsException ix)
{
GftBase.ShowImsMessageDialog(this.Page, ix.GetMessage(Login.Lang), ImsMessageIcon.None);
}
catch (Exception ex)
{
GftBase.ShowImsMessageDialog(this.Page, ex.Message, ImsMessageIcon.None);
}
}
导出来后Execl
