Develop Reference

Merging more than one rdlc into single reportviewer control

I want to merge 2 .rdlc files (with C#) into a single .rdlc so that it prints in a single file in reportviewer control.
This is what I'm trying:
this.reportViewer1.LocalReport.DataSources.Clear();
reportViewer1.LocalReport.ReportPath = "model1.rdlc";
reportViewer1.LocalReport.ReportPath = "model2.rdlc";
this.reportViewer1.LocalReport.DataSources.Add(datasource);
this.reportViewer1.RefreshReport();
but it's only showing me the second report (model2.rdlc)

Reportviewer show's just one report file at time
because you overwrite the report path at the second line
it behaves like that (showing the last report)
You have some options:
1- Using subreport inside the first report and setting the supreport parameter as report 2.
2- Using multiple data sourses for one report and merge the two reports in the report.
3- Using the page brake option to split your report to multiple pages but it has some limitation because of it cannot work at any area unless it has a container in the report like (table - rectangle - matrix).

I need to change source in rdlc report

I made an rdlc report before and now I increased two columns in database table. These two columns are not showing in report, what should I do?

In the Report Data Window, refresh the Dataset. new fields will be available in the dataset and you may need to add new fields to your report accordingly

SSRS Matrix column group split on another page if threshold column number crossed

1)I am using matrix to show my data as tax for each year. So in row I am showing tax name and for column I am grouping against year. I using rdlc to export it as pdf. on a page as per width it showing 6 column and as there is no space it split remaining columns on another page. Now my issue is, there are no much rows and there is space on same page below that tablix to occupy another tablix (splitted column's) still it is moving remaining columns on another page. I tried with keepTogether property but is it not working for me. I set it for tablix,column group also.
2) Now I want to use this above report as sub report so I add this report on another report file at the end of page. So while rendering the report as subreport it split exceed columns on another page which is also at the end of page keeping a lot of empty space at start of that second page. How can I avoid this.
Suppose I have Main report with some basic info at first then I put sub report at end of first page. Now sub report contains data in matrix which column increases dynamically. so after 4 column it split and goes on next page for next page and put remaining columns on next page at the END. Which I want at the start of next page.
basic info
sub report content in matrix
---------------------------------------------------------------------------
page break here from sub report as more columns are there.
( this space remain blank. I want to avoid this blank space.)
sub report remaining columns came here.

Suppress Page header when there is no data in Details sections

I am using a datatable to load the data for the crystal report. Based on the data filtered by the user in the DataGridview and clicking on Print will display the filtered data in Report.
All is fine.I have done this.When there is no data in the Details section I am suppressing it using the below formula in the suppress.
Shared NumberVar PageofLastField;
If OnLastRecord then PageofLastField = PageNumber;
In the header section when there is no data in Details section supress page header.Below is the formula used.
(Reference Crystal Reports - Suppress a Page Header if the page has 0 records)
Shared NumberVar PageofLastField;
PageofLastField := PageofLastField;
if pageofLastfield <> 0 and PageNumber > PageofLastField
THEN TRUE
ELSE FALSE
Below is the image of the crystal report.
When I click PRINT button in the front end. When there is no data in Details section the Page header is displayed.
Below image is the Second page of the report where there are no records and summary is displayed.
If in the header section if I use the below formula
OnLastRecord AND Count({PaymentReportTable.InvID}) <> 1
In the Second Page even if the records are displayed Pageheader is not displayed.I understand it becos the formula says it all.
I have created around 12 Crystal reports and I am facing the same problem in all of them.
Please advice.

I read your question. just inform me what happen when you not suppress.
I think your footer evaluate because of it has the value.
are you try OnLastRecord or {GROUP FIELD NAME} <> Next({GROUP FIELD NAME}) this condition as your reference link.

how to remove distance between rows in table in crystal report

i use 2 box in section 3 in crystal report. but in run time, between rows, show space.!
titles in box1, and result info in the box2.in box2, for every rows, between rows ,is made space.
how to remove distance between rows in table in crystal report?

Do one thing in report : Right click on section and suppress or set fit to section option.
Your report should be like this.