使用System.Drawing.Image.Save将多个图像保存到Tiff文件时，参数无效

问题描述

你好techie，



我正在开发一个用于管理扫描文档的.NET Windows应用程序。

在我的项目中，我正在转换使用 System.Drawing.Imaging.Save （或） SaveAdd 方法将扫描的图像转换为tiff文件。

当我将10-15张图像转换为单个tiff文件时，工作正常。如果我将更多图像转换为tiff文件，我的代码会触发这些异常参数无效或内存不足。

我已经完成了最后一周的所有调试，有时我的代码运行完美，但大多数时候它抛出错误。



我已经通过codeproject.com遵循以下参考代码：

[ ]



将图像转换为tiff的代码：

Hi techie,

I am developing a .NET windows application, for managing scanning documents.
In my project I am converting the scanned images into tiff file by using System.Drawing.Imaging.Save (or) SaveAdd methods.
It is working fine, when I am converting 10-15 images into single tiff file. If I convert more images into tiff file, my code is triggering these exception "Parameter is not valid" or "Out of memory".
I have totally tried all the debugging last one week, sometimes my code is running perfect, but most of the times its throwing the error.

I have followed the below reference code by codeproject.com:
Save images into a multi-page TIFF file or add images to an existing TIFF file[^]

Below the code for convert images into tiff:

public bool saveMultipage(Image[] bmp, string location, string type)
        {
            if (bmp != null)
            {
                try
                {
                    ImageCodecInfo codecInfo = getCodecForstring(type);

                    for (int i = 0; i < bmp.Length; i++)
                    {
                        if (bmp[i] == null)
                            break;
                        bmp[i] = (Image)ConvertToBitonal((Bitmap)bmp[i]);
                    }

                    if (bmp.Length == 1)
                    {

                        EncoderParameters iparams = new EncoderParameters(1);
                        Encoder iparam = Encoder.Compression;
                        EncoderParameter iparamPara = new EncoderParameter(iparam, (long)(EncoderValue.CompressionCCITT4));
                        iparams.Param[0] = iparamPara;
                        bmp[0].Save(location, codecInfo, iparams);


                    }
                    else if (bmp.Length > 1)
                    {

                        Encoder saveEncoder;
                        Encoder compressionEncoder;
                        EncoderParameter SaveEncodeParam;
                        EncoderParameter CompressionEncodeParam;
                        EncoderParameters EncoderParams = new EncoderParameters(2);

                        saveEncoder = Encoder.SaveFlag;
                        compressionEncoder = Encoder.Compression;

                        // Save the first page (frame).
                        SaveEncodeParam = new EncoderParameter(saveEncoder, (long)EncoderValue.MultiFrame);
                        CompressionEncodeParam = new EncoderParameter(compressionEncoder, (long)EncoderValue.CompressionCCITT4);
                        EncoderParams.Param[0] = CompressionEncodeParam;
                        EncoderParams.Param[1] = SaveEncodeParam;

                        File.Delete(location);
                        bmp[0].Save(location, codecInfo, EncoderParams);


                        for (int i = 1; i < bmp.Length; i++)
                        {
                            if (bmp[i] == null)
                                break;

                            SaveEncodeParam = new EncoderParameter(saveEncoder, (long)EncoderValue.FrameDimensionPage);
                            CompressionEncodeParam = new EncoderParameter(compressionEncoder, (long)EncoderValue.CompressionCCITT4);
                            EncoderParams.Param[0] = CompressionEncodeParam;
                            EncoderParams.Param[1] = SaveEncodeParam;
                            bmp[0].SaveAdd(bmp[i], EncoderParams);

                        }

                        SaveEncodeParam = new EncoderParameter(saveEncoder, (long)EncoderValue.Flush);
                        EncoderParams.Param[0] = SaveEncodeParam;
                        bmp[0].SaveAdd(EncoderParams);
                    }
                    return true;


                }
                catch (System.Exception ee)
                {
                    throw new Exception(ee.Message + "  Error in saving as multipage ");
                }
            }
            else
                return false;

        }

请告诉我一些关于这个问题的信息，这对我有帮助。



先谢谢开发人员。

Kindly suggest me something regarding this issue, it will be helpful for me.

Thanks in advance developers.

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