VS 2008 Reporting Services 报告定义生成

发布于 2024-08-17 01:31:43 字数 671 浏览 3 评论 0原文

我正在使用 VS 2008 生成 Reporting Services 报告定义。问题是，每当我尝试从流加载报告定义时，都会收到错误。

我有以下代码：

var loaded = XDocument.Load(filePath);
LocalReport ret = new LocalReport();
using (var stream = new MemoryStream())
{
    var writer = new StreamWriter(stream);
    loaded.Save(writer);
    var ret = new LocalReport();
    ret.LoadReportDefinition(stream);

    var r= ret.GetParameters();
}

当执行最后一行时，它会抛出 LocalProcessingException 并带有以下文本：

{"The report definition is not valid.  Details: O elemento raiz está em falta."}

详细信息转换为“根元素丢失”。

可能出什么问题了？

编辑： XML 定义是正确的。问题出在加载定义之后的某个地方。

原文

I'm using VS 2008 to generate a Reporting Services report definition. The problem is that whenever I try to load a report definition from a stream I get an error.

I have the following code:

var loaded = XDocument.Load(filePath);
LocalReport ret = new LocalReport();
using (var stream = new MemoryStream())
{
    var writer = new StreamWriter(stream);
    loaded.Save(writer);
    var ret = new LocalReport();
    ret.LoadReportDefinition(stream);

    var r= ret.GetParameters();
}

When the last line is executing it throws LocalProcessingException with the followinf text:

{"The report definition is not valid.  Details: O elemento raiz está em falta."}

The details translate to "root element missing".

What could be wrong?

Edit: The XML definition is correct. The problem lies somewhere after the loading of the definition.

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鸢与 2024-08-24 01:31:43

在再次读取之前，您必须将流重置回位置 0。否则，LoadReportDefinition 将从流的末尾开始读取。

var loaded = XDocument.Load(filePath);
LocalReport ret = new LocalReport();
using (var stream = new MemoryStream())
{
    var writer = new StreamWriter(stream);
    loaded.Save(writer);
    writer.Close();
    writer.Position = 0;
    var ret = new LocalReport();
    ret.LoadReportDefinition(stream);

    var r= ret.GetParameters();
}

请参阅此页<上的 CreateMemoryStream() /a>

You must reset the stream back to position 0 before reading it again. Otherwise LoadReportDefinition will start to read from the end of the stream.

var loaded = XDocument.Load(filePath);
LocalReport ret = new LocalReport();
using (var stream = new MemoryStream())
{
    var writer = new StreamWriter(stream);
    loaded.Save(writer);
    writer.Close();
    writer.Position = 0;
    var ret = new LocalReport();
    ret.LoadReportDefinition(stream);

    var r= ret.GetParameters();
}

See CreateMemoryStream() on this page

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