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Hi my fellows!
My problem is that I want to represent a FormTreeControl's data in an SSRS report.
I generate the tree's lines with special table characters like this:
─┬11110100 ├─┬ 11110100 │ └─┬ 11110100 │ └─ 11110100 ├─┬ 11110100 │ └─ 11110100
I store the lines in a regular table line by line.
In the report the line by line display is not solvable for me, because there is a little gap in the top of the cells, and it foul up the continous appearance of the tree. So I imagined that I aggregate the lines into a single global variable, and display it in a textbox.
I created a Row Group to a Tablix, and used the RunningValue method to reach the single lines one by one in the table. I wrote 2 data methods for concatenation and display:
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Reportpublic partial class InventTrackingReport_INS
{
public static string Lines = "";
[DataMethod(), PermissionSet(SecurityAction.Assert, Name = "FullTrust")]
public static int ConcatenateLines(string line, int LineNum)
{
if (Lines.Length > 0)
Lines += "\n";
Lines += line;
return LineNum;
}
[DataMethod(), PermissionSet(SecurityAction.Assert, Name = "FullTrust")]
public static string GetLines()
{
return Lines;
}
}
I call the first in tablix aggrgation like this:
=RunningValue(ConcatenateLines(Fields!Line.Value, Fields!LineNum.Value), Sum, "InventTrackingDetails")
And I call the second one in the textbox, in which I want to display the result.
The solution is works fine at the first time, but after second run, the report shows all previous results, that it creates in previous runs. I see all previously generated trees before the new tree in the report, despite the table stores the correct data. I tried everything... query, DP class, Tmp table, regular table, but the result is the same. I think that is a weird cache problem or something like this.
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