将位图图像导出到水晶报告 [英] exporting bitmap image to crystal report

问题描述

我正在绘制图表并将其保存为.bmp格式。我正在将该图像转换为数据集中的二进制格式，然后我将该图像导出到水晶报表。现在问题是，它显示黑色作为背景颜色。请点击水晶报告的以下链接。任何帮助或想法都会非常值得赞赏。





此处的图像

I'm drawing a graph and saving it as ".bmp" format. I'm converting that image to binary format in a dataset, and then I'm exporting that image to crystal report. Now the problem is, It is showing Black as a background color. Please click the below link for the crystal report. any help or idea's would be highly appreciable.


Image here

推荐答案

您是否按照以下步骤在水晶报表中显示位图图像：Step-bby-step guide [ ^ ]



另外，看看这篇文章：如何在运行时上传或更改Crystal Report中的图像 [ ^ ]

Did you follow the following steps to show the Bitmap images in your crystal report: Step-bby-step guide[^]

Also, have a look at this article: How to Upload or Change an image in the Crystal Report at runtime[^]

我遇到了同样的问题e。

根本原因是： 您的位图图像具有透明背景。



在绘制图像之前，只需绘制白色背景或彩色的东西。



例如：



System.Drawing.SolidBrush whiteBrush = new System.Drawing.SolidBrush（System.Drawing.Color.White）;

System.Drawing.Rectangle rect = new System.Drawing.Rectangle（0， 0,350,200）;

g.FillRectangle（whiteBrush，rect）;



\\\ \\tthen继续画在这里

i got the same problem before.
The rootcause is this: your bitmap image has transparent background.

Just draw white background or something in color before your image is drawn.

example:

System.Drawing.SolidBrush whiteBrush = new System.Drawing.SolidBrush(System.Drawing.Color.White);
System.Drawing.Rectangle rect = new System.Drawing.Rectangle(0, 0, 350, 200);
g.FillRectangle(whiteBrush, rect);

\\then continue to draw here

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