遍历报表的各列以动态显示/隐藏它们吗? [英] Iterate over columns of a report to dynamically show/hide them?

问题描述

我想尝试实现一个参数，该参数将允许用户动态选择要在报告中显示的列.一个想法是创建一个具有列名的多值参数.用户点击查看报告后，我想尝试对列和所选值进行迭代以加入可见性.

I want to try and implement a parameter which will allow users to dynamically choose which columns are going to be shown in a report. An idea is to create a multiple value parameter which has column names. After user hit View Report I want to try iterate over columns and selected values to join visibility.

如何遍历tablix中的列?

How I can iterate over columns inside a tablix?

如何遍历参数的多个值，以便确定是否选择了某个值?

How I can iterate over multiple values of a parameter, so I can find if some value is selected or not?

我正在使用MS SQL Reporting Services 2012.

I am using MS SQL Reporting Services 2012.

推荐答案

对于表(即固定列)，可以使用以下方法.它并不是真正基于循环，而是基于参数选择对每列进行单独的可见性检查.

For a table, i.e. fixed columns, you can use the following approach. It's not really loop based so much as an individual distinct visibility check for each column based on a parameter selection.

设置一个多值参数，该参数列出了可以显示/隐藏的列.

Set up a multi-valued parameter that lists the columns that can be displayed/hidden.

然后，针对实际表中的每个列，将列可见性设置为使用基于参数的表达式:

Then, for each of these columns in the actual table, set the Column Visibility to use an expression based on the parameter:

表达式类似于:

=IIf(InStr(Join(Parameters!IncludedColumn.Value, ","), "Col1") > 0, false, true)

这是在为 IncludedColumn 参数构造一个所有选定值的字符串，然后检查是否包含特定的列标识符；此特定列的 Col1 .您将为每列使用不同的常量.

What this is doing is constructing a string of all selected values for the IncludedColumn parameter, then checking if a certain column identifier is included; Col1 for this particular column. You'd use different constants for each column.

因此，在运行报表时，此方法可以基于参数选择来隐藏/显示列.

So when running the report this approach can hide/display columns based on a parameter selection.

所有选定的列:

已选择某些列:

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