Documentation – Data Filtering with Golang via C++

Gocpp: How to Filter Blanks or Non-Blanks with Golang via C++

Mon, 01 Jan 0001 00:00:00 +0000

Possible Usage Scenarios

Filtering data in Excel is a valuable tool that enhances data analysis, exploration, and presentation by enabling users to focus on specific subsets of data based on their criteria, making the overall data manipulation and interpretation process more efficient and effective.

How to Filter Blanks or Non-Blanks in Excel

In Excel, you can easily filter blanks or non-blanks using the filtering options. Here’s how you can do it:

How to Filter Blanks in Excel

Select the Range: Click on the letter of the column header to select the entire column or select the range where you want to filter blanks.
Open the Filter Menu: Go to the “Data” tab in the ribbon.
Filter Options: Click on the “Filter” button. This will add filter arrows to the selected range.
Filter Blanks: Click on the filter arrow in the column you want to filter blanks. Unselect all options except “Blanks” and click OK. This will display only the blank cells in that column.
The result is as follows:

How to Filter Non-Blanks in Excel

Select the Range: Click on the letter of the column header to select the entire column or select the range where you want to filter non-blanks.
Open the Filter Menu: Go to the “Data” tab in the ribbon.
Filter Options: Click on the “Filter” button. This will add filter arrows to the selected range.
Filter Non-Blanks: Click on the filter arrow in the column you want to filter non-blanks. Unselect all options except “Non-blanks” or “Custom” and set the conditions accordingly. Click OK. This will display only the cells that are not blank in that column.
The result is as follows:

How to Filter Blanks using Aspose.Cells

If a column contains text such that only a few cells are blank, and a filter is required to select only those rows where blank cells are present, the AutoFilter.MatchBlanks(int fieldIndex) and AutoFilter.AddFilter(int fieldIndex, string criteria) functions can be used as demonstrated below.

Please see the following sample code that loads the sample Excel file which contains some dummy data. The sample code uses three methods to filter blanks and then saves the workbook as the output Excel file.

How to Filter Non-Blanks using Aspose.Cells

Please see the following sample code that loads the sample Excel file which contains some dummy data. After loading the file, call the AutoFilter.MatchNonBlanks(int fieldIndex) function to filter non‑blank data, and finally save the workbook as the output Excel file.

Gocpp: Apply Advanced Filter of Microsoft Excel to Display Records Meeting Complex Criteria with Golang via C++

Mon, 01 Jan 0001 00:00:00 +0000

Possible Usage Scenarios

Microsoft Excel allows you to apply Advanced Filter on worksheet data to display records that meet complex criteria. You can apply Advanced Filter with Microsoft Excel via its Data > Advanced command as shown in this screenshot.

Aspose.Cells also allows you to apply the Advanced Filter using the GetAdvancedFilter() method. Like Microsoft Excel, it accepts the following parameters.

isFilter
Indicates whether to filter the list in place.

listRange
The list range.

criteriaRange
The criteria range.

copyTo
The range to which data will be copied.

uniqueRecordOnly
Specifies whether to display or copy only unique rows.

Apply Advanced Filter of Microsoft Excel to Display Records Meeting Complex Criteria

The following sample code applies the advanced filter to the Sample Excel File and generates the Output Excel File. The screenshot shows both files for comparison. As you can see in the screenshot, the data has been filtered in the output Excel file according to complex criteria.

Sample Code

Gocpp: Get All Hidden Rows Indices after Refreshing AutoFilter with Golang via C++

Mon, 01 Jan 0001 00:00:00 +0000

Possible Usage Scenarios

When you apply the AutoFilter on worksheet cells, some of the rows get hidden automatically. However, it might be the case that some rows are already hidden manually by an Excel end‑user and are not hidden by an AutoFilter. It therefore makes it difficult to know which rows are hidden by the AutoFilter and which are hidden manually by the Excel end‑user. Aspose.Cells deals with this problem using the int[] AutoFilter.Refresh(bool hideRows) method. This method returns the row indices of all the rows hidden by the AutoFilter and not manually by the Excel end‑user.

Get All Hidden Rows Indices after Refreshing AutoFilter

Please see the following sample code that loads the sample Excel file which contains some rows hidden manually by an Excel end‑user. The code applies the AutoFilter and refreshes it using the int[] AutoFilter.Refresh(bool hideRows) method, which returns the row indices of all the rows hidden by the AutoFilter. It then prints the indices of the hidden rows on the console along with cell names and values.

Sample Code

Console Output

Printing Rows Indices, Cell Names and Values Hidden By AutoFilter.

\--------------------------

1       A2      Apple

2       A3      Apple

3       A4      Apple

6       A7      Apple

7       A8      Apple

11      A12     Pear

12      A13     Pear