Manage Rows and Columns

To allow you to manage a table’s rows and columns in a PowerPoint presentation, Aspose.Slides provides the Table class, ITable interface, and many other types.

Set First Row as Header

  1. Create an instance of the Presentation class and load the presentation.
  2. Get a slide’s reference through its index.
  3. Create an ITable object and set it to null.
  4. Iterate through all IShape objects to find the relevant table.
  5. Set the table’s first row as its header.

This Java code shows you how to set a table’s first row as its header:

// Instantiates the Presentation class
Presentation pres = new Presentation("table.pptx");
try {
    // Accesses the first slide
    ISlide sld = pres.getSlides().get_Item(0);

    // Initializes the null TableEx
    ITable tbl = null;

    // Iterates through the shapes and sets a reference to the table
    for (IShape shp : sld.getShapes())
    {
        if (shp instanceof ITable) 
        {
            tbl = (ITable)shp;
            
            //Sets the first row of a table as its header
            tbl.setFirstRow(true);
        }
    }
    
    // Saves the presentation to disk
    pres.save("pres.pptx", SaveFormat.Pptx);
} finally {
    if (pres != null) pres.dispose();
}

Clone Table’s Row or Column

  1. Create an instance of the Presentation class and load the presentation,
  2. Get a slide’s reference through its index.
  3. Define an array of columnWidth.
  4. Define an array of rowHeight.
  5. Add an ITable object to the slide through the addTable method.
  6. Clone the table row.
  7. Clone the table column.
  8. Save the modified presentation.

This Java code shows you how to clone a PowerPoint table’s row or column:

 // Instantiates the Presentation class
Presentation pres = new Presentation("Test.pptx");
try {
    // Accesses the first slide
    ISlide sld = pres.getSlides().get_Item(0);

    // Defines columns with widths and rows with heights
    double[] dblCols = { 50, 50, 50 };
    double[] dblRows = { 50, 30, 30, 30, 30 };

    // Adds a table shape to slide
    ITable table = sld.getShapes().addTable(100, 50, dblCols, dblRows);

    // Adds some text to the row 1 cell 1
    table.get_Item(0, 0).getTextFrame().setText("Row 1 Cell 1");

    // Adds some text to the row 1 cell 2
    table.get_Item(1, 0).getTextFrame().setText("Row 1 Cell 2");

    // Clones Row 1 at end of table
    table.getRows().addClone(table.getRows().get_Item(0), false);

    // Adds some text to the row 2 cell 1
    table.get_Item(0, 1).getTextFrame().setText("Row 2 Cell 1");

    // Adds some text to the row 2 cell 2
    table.get_Item(1, 1).getTextFrame().setText("Row 2 Cell 2");

    // Clones Row 2 as 4th row of table
    table.getRows().insertClone(3, table.getRows().get_Item(1), false);

    // Clones first column at the end
    table.getColumns().addClone(table.getColumns().get_Item(0), false);

    // Clones 2nd column at 4th column index
    table.getColumns().insertClone(3,table.getColumns().get_Item(1), false);
    
    // Saves the presentation to disk
    pres.save("table_out.pptx", SaveFormat.Pptx);
} finally {
    if (pres != null) pres.dispose();
}

Remove Row or Column from Table

  1. Create an instance of the Presentation class and load the presentation,
  2. Get a slide’s reference through its index.
  3. Define an array of columnWidth.
  4. Define an array of rowHeight.
  5. Add an ITable object to the slide through the addTable method.
  6. Remove the table row.
  7. Remove the table column.
  8. Save the modified presentation.

This Java code shows you how to remove a row or column from a table:

Presentation pres = new Presentation();
try {
    ISlide slide = pres.getSlides().get_Item(0);
    
    double[] colWidth = { 100, 50, 30 };
    double[] rowHeight = { 30, 50, 30 };

    ITable table = slide.getShapes().addTable(100, 100, colWidth, rowHeight);
    table.getRows().removeAt(1, false);
    table.getColumns().removeAt(1, false);
    
    pres.save("TestTable_out.pptx", SaveFormat.Pptx);
} finally {
    if (pres != null) pres.dispose();
}

Set Text Formatting on Table Row Level

  1. Create an instance of the Presentation class and load the presentation,
  2. Get a slide’s reference through its index.
  3. Access the relevant ITable object from the slide.
  4. Set the first-row cells' setFontHeight(float value).
  5. Set the first-row cells' setAlignment(int value) and setMarginRight(float value).
  6. Set the second-row cells' setTextVerticalType(byte value).
  7. Save the modified presentation.

This Java code demonstrates the operation.

// Creates an instance of the Presentation class
Presentation pres = new Presentation();
try {
    // Let's assume that the first shape on the first slide is a table
    ITable someTable = (ITable)pres.getSlides().get_Item(0).getShapes().get_Item(0); 
    
    // Sets first row cells' font height
    PortionFormat portionFormat = new PortionFormat();
    portionFormat.setFontHeight(25);
	
    someTable.getRows().get_Item(0).setTextFormat(portionFormat);
    
    // Sets the first row cells' text alignment and right margin
    ParagraphFormat paragraphFormat = new ParagraphFormat();
    paragraphFormat.setAlignment(TextAlignment.Right);
    paragraphFormat.setMarginRight(20);
	
    someTable.getRows().get_Item(0).setTextFormat(paragraphFormat);
    
    // Sets the second row cells' text vertical type
    TextFrameFormat textFrameFormat = new TextFrameFormat();
    textFrameFormat.setTextVerticalType(TextVerticalType.Vertical);
	
    someTable.getRows().get_Item(1).setTextFormat(textFrameFormat);

  // Saves the presentation to disk
    pres.save("result.pptx", SaveFormat.Pptx);
} finally {
    if (pres != null) pres.dispose();
}

Set Text Formatting on Table Column Level

  1. Create an instance of the Presentation class and load the presentation,
  2. Get a slide’s reference through its index.
  3. Access the relevant ITable object from the slide.
  4. Set the first-column cells' setFontHeight(float value).
  5. Set the first-column cells' setAlignment(int value) and setMarginRight(float value).
  6. Set the second-column cells' setTextVerticalType(byte value).
  7. Save the modified presentation.

This Java code demonstrates the operation:

// Creates an instance of the Presentation class
Presentation pres = new Presentation();
try {
    // Let's assume that the first shape on the first slide is a table
    ITable someTable = (ITable)pres.getSlides().get_Item(0).getShapes().get_Item(0)];

    // Sets the first column cells' font height
    PortionFormat portionFormat = new PortionFormat();
    portionFormat.setFontHeight(25);
	
    someTable.getColumns().get_Item(0).setTextFormat(portionFormat);

    // Sets the first column cells' text alignment and right margin in one call
    ParagraphFormat paragraphFormat = new ParagraphFormat();
    paragraphFormat.setAlignment(TextAlignment.Right);
    paragraphFormat.setMarginRight(20);
	
    someTable.getColumns().get_Item(0).setTextFormat(paragraphFormat);

    // Sets the second column cells' text vertical type
    TextFrameFormat textFrameFormat = new TextFrameFormat();
    textFrameFormat.setTextVerticalType(TextVerticalType.Vertical);
	
    someTable.getColumns().get_Item(1).setTextFormat(textFrameFormat);

    pres.save("result.pptx", SaveFormat.Pptx);
} finally {
    if (pres != null) pres.dispose();
}

Get Table Style Properties

Aspose.Slides allows you to retrieve the style properties for a table so that you can use those details for another table or somewhere else. This Java code shows you how to get the style properties from a table preset style:

Presentation pres = new Presentation();
try {
    ITable table = pres.getSlides().get_Item(0).getShapes().addTable(10, 10, new double[] { 100, 150 }, new double[] { 5, 5, 5 });
    table.setStylePreset(TableStylePreset.DarkStyle1); // change the default style preset theme
    pres.save("table.pptx", SaveFormat.Pptx);
} finally {
    if (pres != null) pres.dispose();
}
Manage Table Manage Cells