Manage Cells

Identify Merged Cell

1. Create an instance of the Presentation class.
2. Get the table from the first slide.
3. Iterate through the table’s rows and columns to find merge cells.
4. Print message when merged cells are found.

This C++ code shows you how to identify merged table cells in a presentation:

auto pres = System::MakeObject<Presentation>(u"SomePresentationWithTable.pptx");
auto table = System::AsCast<ITable>(pres->get_Slides()->idx_get(0)->get_Shapes()->idx_get(0));

// assuming that Slide#0.Shape#0 is a table
for (int32_t i = 0; i < table->get_Rows()->get_Count(); i++)
{
    for (int32_t j = 0; j < table->get_Columns()->get_Count(); j++)
    {
        auto currentCell = table->get_Rows()->idx_get(i)->idx_get(j);
        if (currentCell->get_IsMergedCell())
        {
            Console::WriteLine(String::Format(u"Cell {0};{1} is a part of merged cell with RowSpan={2} and ColSpan={3} starting from Cell {4};{5}.", 
                i, j, currentCell->get_RowSpan(), currentCell->get_ColSpan(), currentCell->get_FirstRowIndex(), currentCell->get_FirstColumnIndex()));
        }
    }
}

Remove Table Cells Border

1. Create an instance of the Presentation class.
2. Get a slide’s reference through its index.
3. Define an array of columns with width.
4. Define an array of rows with height.
5. Add a table to the slide through the AddTable method.
6. Iterate through every cell to clear the top, bottom, right, and left borders.
7. Save the modified presentation as a PPTX file.

This C++ code shows you how to remove the borders from table cells:

// Instantiates the Presentation class that represents a PPTX file
auto pres = MakeObject<Presentation>();
// Accesses the first slide
auto sld = pres->get_Slides()->idx_get(0);

// Defines columns with widths and rows with heights
auto dblCols = MakeArray<double>({ 50, 50, 50, 50 });
auto dblRows = MakeArray<double>({ 50, 30, 30, 30, 30 });

// Adds a table shape to slide
auto tbl = sld->get_Shapes()->AddTable(100.0f, 50.0f, dblCols, dblRows);

// Sets the border format for each cell
for (const auto& row : System::IterateOver(tbl->get_Rows()))
{
    for (const auto& cell : System::IterateOver(row))
    {
        cell->get_CellFormat()->get_BorderTop()->get_FillFormat()->set_FillType(FillType::NoFill);
        cell->get_CellFormat()->get_BorderBottom()->get_FillFormat()->set_FillType(FillType::NoFill);
        cell->get_CellFormat()->get_BorderLeft()->get_FillFormat()->set_FillType(FillType::NoFill);
        cell->get_CellFormat()->get_BorderRight()->get_FillFormat()->set_FillType(FillType::NoFill);
    }
}

// Writes the PPTX file to Disk
pres->Save(u"table_out.pptx", SaveFormat::Pptx);

Numbering in Merged Cells

If we merge 2 pairs of cells (1, 1) x (2, 1) and (1, 2) x (2, 2), the resulting table will be numbered. This C# code demonstrates the process:

const String outPath = u"../out/MergeCells_out.pptx";

// Loads the desired the presentation
SharedPtr<Presentation> pres = MakeObject<Presentation>();

// Accesses the first slide
SharedPtr<ISlide> islide = pres->get_Slides()->idx_get(0);

// Defines columns with widths and rows with heights
System::ArrayPtr<double> dblCols = System::MakeObject<System::Array<double>>(4, 70);
System::ArrayPtr<double> dblRows = System::MakeObject<System::Array<double>>(4, 70);

// Adds a table shape to the slide
SharedPtr<ITable> table = islide->get_Shapes()->AddTable(100, 50, dblCols, dblRows);


// Sets the border format for each cell
for (int x = 0; x < table->get_Rows()->get_Count(); x++)
{
    SharedPtr<IRow> row = table->get_Rows()->idx_get(x);
    for (int y = 0; y < row->get_Count(); y++)
    {
        SharedPtr<ICell> cell = row->idx_get(y);

        cell->get_BorderTop()->get_FillFormat()->set_FillType(FillType::Solid);
        cell->get_BorderTop()->get_FillFormat()->get_SolidFillColor()->set_Color(System::Drawing::Color::get_Red());
        cell->get_BorderTop()->set_Width(5);

        cell->get_BorderBottom()->get_FillFormat()->set_FillType(FillType::Solid);
        cell->get_BorderBottom()->get_FillFormat()->get_SolidFillColor()->set_Color(System::Drawing::Color::get_Red());
        cell->get_BorderBottom()->set_Width(5);

        cell->get_BorderLeft()->get_FillFormat()->set_FillType(FillType::Solid);
        cell->get_BorderLeft()->get_FillFormat()->get_SolidFillColor()->set_Color(System::Drawing::Color::get_Red());
        cell->get_BorderLeft()->set_Width(5);

        cell->get_BorderRight()->get_FillFormat()->set_FillType(FillType::Solid);
        cell->get_BorderRight()->get_FillFormat()->get_SolidFillColor()->set_Color(System::Drawing::Color::get_Red());
        cell->get_BorderRight()->set_Width(5);

    }

}
// Merges cells (1, 1) x (2, 1)
table->MergeCells(table->idx_get(1, 1), table->idx_get(2, 1), false);

// Merges cells (1, 2) x (2, 2)
table->MergeCells(table->idx_get(1, 2), table->idx_get(2, 2), false);


// Saves the PPTX file to Disk
pres->Save(outPath, Aspose::Slides::Export::SaveFormat::Pptx);

We then merge the cells further by merging (1, 1) and (1, 2). The result is a table containing a large merged cell in its center:

// The path to the documents directory.
const String outPath = u"../out/MergeCells_out.pptx";

// Loads the desired the presentation
SharedPtr<Presentation> pres = MakeObject<Presentation>();

// Accesses the first slide
SharedPtr<ISlide> islide = pres->get_Slides()->idx_get(0);

// Defines columns with widths and rows with heights
System::ArrayPtr<double> dblCols = System::MakeObject<System::Array<double>>(4, 70);
System::ArrayPtr<double> dblRows = System::MakeObject<System::Array<double>>(4, 70);

// Adds a table shape to the slide
SharedPtr<ITable> table = islide->get_Shapes()->AddTable(100, 50, dblCols, dblRows);


// Sets the border format for each cell
for (int x = 0; x < table->get_Rows()->get_Count(); x++)
{
    SharedPtr<IRow> row = table->get_Rows()->idx_get(x);
    for (int y = 0; y < row->get_Count(); y++)
    {
        SharedPtr<ICell> cell = row->idx_get(y);

        cell->get_BorderTop()->get_FillFormat()->set_FillType(FillType::Solid);
        cell->get_BorderTop()->get_FillFormat()->get_SolidFillColor()->set_Color(System::Drawing::Color::get_Red());
        cell->get_BorderTop()->set_Width(5);

        cell->get_BorderBottom()->get_FillFormat()->set_FillType(FillType::Solid);
        cell->get_BorderBottom()->get_FillFormat()->get_SolidFillColor()->set_Color(System::Drawing::Color::get_Red());
        cell->get_BorderBottom()->set_Width(5);

        cell->get_BorderLeft()->get_FillFormat()->set_FillType(FillType::Solid);
        cell->get_BorderLeft()->get_FillFormat()->get_SolidFillColor()->set_Color(System::Drawing::Color::get_Red());
        cell->get_BorderLeft()->set_Width(5);

        cell->get_BorderRight()->get_FillFormat()->set_FillType(FillType::Solid);
        cell->get_BorderRight()->get_FillFormat()->get_SolidFillColor()->set_Color(System::Drawing::Color::get_Red());
        cell->get_BorderRight()->set_Width(5);

    }

}

// Merges cells (1, 1) x (2, 1)
table->MergeCells(table->idx_get(1, 1), table->idx_get(2, 1), false);

// Merges cells (1, 2) x (2, 2)
table->MergeCells(table->idx_get(1, 2), table->idx_get(2, 2), false);


// Saves the PPTX file to Disk
pres->Save(outPath, Aspose::Slides::Export::SaveFormat::Pptx);

Numbering in Splitted Cell

In previous examples, when table cells got merged, the numeration or number system in other cells did not change.

This time, we take a regular table (a table without merged cells) and then try to split cell (1,1) to get a special table. You may want to pay attention to this table’s numbering, which may be considered strange. However, that is the way Microsoft PowerPoint numerates table cells and Aspose.Slides does the same thing.

This C++ code demonstrates the process we described:

// The path to the documents directory.
const String outPath = u"../out/CellSplit_out.pptx";

// Loads the desired the presentation
SharedPtr<Presentation> pres = MakeObject<Presentation>();

// Accesses the first slide
SharedPtr<ISlide> islide = pres->get_Slides()->idx_get(0);

// Defines columns with widths and rows with heights
System::ArrayPtr<double> dblCols = System::MakeObject<System::Array<double>>(4, 70);
System::ArrayPtr<double> dblRows = System::MakeObject<System::Array<double>>(4, 70);

// Adds a table shape to slide
SharedPtr<ITable> table = islide->get_Shapes()->AddTable(100, 50, dblCols, dblRows);


// Sets the border format for each cell
for (int x = 0; x < table->get_Rows()->get_Count(); x++)
{
    SharedPtr<IRow> row = table->get_Rows()->idx_get(x);
    for (int y = 0; y < row->get_Count(); y++)
    {
        SharedPtr<ICell> cell = row->idx_get(y);

        cell->get_BorderTop()->get_FillFormat()->set_FillType(FillType::Solid);
        cell->get_BorderTop()->get_FillFormat()->get_SolidFillColor()->set_Color(System::Drawing::Color::get_Red());
        cell->get_BorderTop()->set_Width(5);

        cell->get_BorderBottom()->get_FillFormat()->set_FillType(FillType::Solid);
        cell->get_BorderBottom()->get_FillFormat()->get_SolidFillColor()->set_Color(System::Drawing::Color::get_Red());
        cell->get_BorderBottom()->set_Width(5);

        cell->get_BorderLeft()->get_FillFormat()->set_FillType(FillType::Solid);
        cell->get_BorderLeft()->get_FillFormat()->get_SolidFillColor()->set_Color(System::Drawing::Color::get_Red());
        cell->get_BorderLeft()->set_Width(5);

        cell->get_BorderRight()->get_FillFormat()->set_FillType(FillType::Solid);
        cell->get_BorderRight()->get_FillFormat()->get_SolidFillColor()->set_Color(System::Drawing::Color::get_Red());
        cell->get_BorderRight()->set_Width(5);

    }

}

// Merges cells (1, 1) x (2, 1)
table->MergeCells(table->idx_get(1, 1), table->idx_get(2, 1), false);

// Merges cells (1, 2) x (2, 2)
table->MergeCells(table->idx_get(1, 2), table->idx_get(2, 2), false);

// splits cell (1, 1). 
table->idx_get(1, 1)->SplitByWidth(table->idx_get(2, 1)->get_Width() / 2);

// Saves the PPTX file to Disk
pres->Save(outPath, Aspose::Slides::Export::SaveFormat::Pptx);

Change Table Cell Background Color

This C++ code shows you how to change a table cell’s background color:

using namespace Aspose::Slides;
using namespace Aspose::Slides::Export;
using namespace System::Drawing;

auto presentation = System::MakeObject<Presentation>();
auto slide = presentation->get_Slides()->idx_get(0);
        
auto dblCols = System::MakeArray<double>({150, 150, 150, 150});
auto dblRows = System::MakeArray<double>({50, 50, 50, 50, 50});
        
// create a new table
auto table = slide->get_Shapes()->AddTable(50.0f, 50.0f, dblCols, dblRows);
        
// set the background color for a cell 
System::SharedPtr<ICell> cell = table->idx_get(2, 3);
cell->get_CellFormat()->get_FillFormat()->set_FillType(Aspose::Slides::FillType::Solid);
cell->get_CellFormat()->get_FillFormat()->get_SolidFillColor()->set_Color(System::Drawing::Color::get_Red());
        
presentation->Save(u"cell_background_color.pptx", Aspose::Slides::Export::SaveFormat::Pptx);

Add Image inside Table Cell

1. Create an instance of thePresentation class.
2. Get a slide’s reference through its index.
3. Define an array of columns with width.
4. Define an array of rows with height.
5. Add a table to the slide through the AddTable method.
6. Create a Bitmap object to hold the image file.
7. Add the bitmap image to the IPPImage object.
8. Set the FillFormat for the Table Cell to Picture.
9. Add the image to the table’s first cell.
10. Save the modified presentation as a PPTX file

This C# code shows you how to place an image inside a table cell when creating a table:

// The path to the documents directory.
const String outPath = u"../out/Image_In_TableCell_out.pptx";
const String ImagePath = u"../templates/Tulips.jpg";

// Loads the desired the presentation
SharedPtr<Presentation> pres = MakeObject<Presentation>();

// Accesses the first slide
SharedPtr<ISlide> islide = pres->get_Slides()->idx_get(0);

// Defines columns with widths and rows with heights
System::ArrayPtr<double> dblCols = System::MakeObject<System::Array<double>>(4, 150);
System::ArrayPtr<double> dblRows = System::MakeObject<System::Array<double>>(4, 100);
System::ArrayPtr<double> total_for_Cat = System::MakeObject<System::Array<double>>(5, 0);

// Adds a table shape to the slide
auto tbl = islide->get_Shapes()->AddTable(50, 50, dblCols, dblRows);

// Gets the picture
auto bitmap = MakeObject<System::Drawing::Bitmap>(ImagePath);

// Adds an image to the presentation's images collection
SharedPtr<IPPImage> imgx = pres->get_Images()->AddImage(bitmap);


// Adds the image to the first table cell
tbl->idx_get(0, 0)->get_FillFormat()->set_FillType(FillType::Picture);
tbl->idx_get(0, 0)->get_FillFormat()->get_PictureFillFormat()->set_PictureFillMode(PictureFillMode::Stretch);
tbl->idx_get(0, 0)->get_FillFormat()->get_PictureFillFormat()->get_Picture()->set_Image(imgx);

// Save the PPTX file to disk
pres->Save(outPath, Aspose::Slides::Export::SaveFormat::Pptx);