将参数从Crystal Reports传递到VB.NET [英] Passing Parameters From Crystal Reports To VB.NET
本文介绍了将参数从Crystal Reports传递到VB.NET的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
您好，
我创建了一个表单，它可以加载Crystal Report（.rpt文件）并在屏幕上显示它。
Crystal报表有一个参数集提示输入一系列ID。
这意味着当我在Crystal中运行它时，系统会提示我选择一个起始ID和结束ID，并且报告仅针对此范围内的ID运行。
但是，在VB中显示报表时，它只是根据Crystal中选择的最后一组参数生成报表，并且不会让我选择每次选择不同的范围。
因此我想我可以设置一个带有文本框和组合框的表单，它将从.rpt文件中读取参数并相应地填充文本和组合框。
首先，这可能吗？
其次，我该怎么做？
干杯，
J.
我创建了一个表单，它可以加载Crystal Report（.rpt文件）并在屏幕上显示它。
Crystal报表有一个参数集提示输入一系列ID。
这意味着当我在Crystal中运行它时，系统会提示我选择一个起始ID和结束ID，并且报告仅针对此范围内的ID运行。
但是，在VB中显示报表时，它只是根据Crystal中选择的最后一组参数生成报表，并且不会让我选择每次选择不同的范围。
因此我想我可以设置一个带有文本框和组合框的表单，它将从.rpt文件中读取参数并相应地填充文本和组合框。
首先，这可能吗？
其次，我该怎么做？
干杯，
J.
Hello,
I have created a form which loads up a Crystal Report (.rpt file) and displays it on the screen.
The Crystal report has a parameter set up which prompts for a range of ID's.
This means that when I run it in Crystal, I get prompted to select a Start ID and and End ID, and the report runs for only the ID's in this range.
However, in VB when I display the report it simply produces the report based on the last set of parameters chosen in Crystal, and doesn't give me the option to select a different range each time.
Therefore I thought I could set up a form with text boxes and combo boxes on, that would read the parameters from the .rpt file and populate the text and combo boxes accordingly.
Firstly, is this possible ?
Secondly, how would I do this ?
Cheers,
J.
I have created a form which loads up a Crystal Report (.rpt file) and displays it on the screen.
The Crystal report has a parameter set up which prompts for a range of ID's.
This means that when I run it in Crystal, I get prompted to select a Start ID and and End ID, and the report runs for only the ID's in this range.
However, in VB when I display the report it simply produces the report based on the last set of parameters chosen in Crystal, and doesn't give me the option to select a different range each time.
Therefore I thought I could set up a form with text boxes and combo boxes on, that would read the parameters from the .rpt file and populate the text and combo boxes accordingly.
Firstly, is this possible ?
Secondly, how would I do this ?
Cheers,
J.
推荐答案
report.SetParameterValue（" ParameterName"，value）;
enu有帮助器评估参数：
report.SetParameterValue("ParameterName" ,value );
There are helper for enumerate the parameters:
foreach （ ParameterFieldDefinition param in report.DataDefinition .ParameterFields）
{
....
}
foreach( ParameterFieldDefinition param in report.DataDefinition.ParameterFields)
{
....
}
Dirk
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