ASP.NET 上传图片 生成文字 图片水印 (单图片水印 or 全覆盖图片水印)

/// <summary> /// 在图片上增加文字水印 /// </summary> /// <param name="Path">原服务器图片路径</param> /// <param name="Path_sy">生成的带文字水印的图片路径</param> /// <param name="text">文字水印</param> protected void AddShuiYinWord(string Path, string Path_sy,string text) { string addText = text; 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(); } /// <summary> /// 在图片上生成图片水印 /// </summary> /// <param name="Path">原服务器图片路径</param> /// <param name="Path_syp">生成的带图片水印的图片路径</param> /// <param name="Path_sypf">水印图片路径</param> /// <param name="type">水印类型 全覆盖为all 单一为""</param> protected void AddShuiYinPic(string Path, string Path_syp, string Path_sypf,string type) { 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); if (type == "all") { for (int i = -50; i <= image.Height+40; i += copyImage.Height) { for (int j = -50; j <= image.Width+40; j += copyImage.Width) { g.DrawImage(copyImage, new System.Drawing.Rectangle(j, i, copyImage.Width, copyImage.Height), 0, 0, copyImage.Width, copyImage.Height, System.Drawing.GraphicsUnit.Pixel); } } } else { 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(); }