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

// Instantiates the Presentation class
Presentation pres = new Presentation("table.pptx");

// Accesses the first slide
ISlide sld = pres.Slides[0];

// Initializes the null TableEx
ITable tbl = null;

// Iterates through the shapes and sets a reference to the table
foreach (IShape shp in sld.Shapes)
{
    if (shp is ITable)
    {
        tbl = (ITable)shp;
    }
}

// Sets the first row of a table as its header
tbl.FirstRow = true;

// Saves the presentation to disk
pres.Save("First_row_header.pptx", SaveFormat.Pptx);

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 C# code shows you how to clone a PowerPoint table’s row or column:

 // Instantiates the Presentation class
using (Presentation presentation = new Presentation("Test.pptx"))
{
    // Accesses the first slide
    ISlide sld = presentation.Slides[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 the slide
    ITable table = sld.Shapes.AddTable(100, 50, dblCols, dblRows);

    // Adds some text to the row 1 cell 1
    table[0, 0].TextFrame.Text = "Row 1 Cell 1";

    // Adds some text to the row 1 cell 2
    table[1, 0].TextFrame.Text = "Row 1 Cell 2";

    // Clones Row 1 at the end of table
    table.Rows.AddClone(table.Rows[0], false);

    // Adds some text to the row 2 cell 1
    table[0, 1].TextFrame.Text = "Row 2 Cell 1";

    // Adds some text to the row 2 cell 2
    table[1, 1].TextFrame.Text = "Row 2 Cell 2";

    // Clones Row 2 as the 4th row of table
    table.Rows.InsertClone(3,table.Rows[1], false);

    // Clones first column at the end
    table.Columns.AddClone(table.Columns[0], false);

    // Clones 2nd column at 4th column index
    table.Columns.InsertClone(3,table.Columns[1], false);
    
    // Saves the presentation to disk 
    presentation.Save("table_out.pptx", Aspose.Slides.Export.SaveFormat.Pptx);
}

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 C# code shows you how to remove a row or column from a table:

Presentation pres = new Presentation();

ISlide slide = pres.Slides[0];
double[] colWidth = { 100, 50, 30 };
double[] rowHeight = { 30, 50, 30 };

ITable table = slide.Shapes.AddTable(100, 100, colWidth, rowHeight);
table.Rows.RemoveAt(1, false);
table.Columns.RemoveAt(1, false);
pres.Save("TestTable_out.pptx", Aspose.Slides.Export.SaveFormat.Pptx);

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' FontHeight.
  5. Set the first-row cells' Alignment and MarginRight.
  6. Set the second-row cells' TextVerticalType.
  7. Save the modified presentation.

This C# code demonstrates the operation.

// Creates an instance of the Presentation class
Presentation presentation = new Presentation();
           
ISlide slide = presentation.Slides[0];

ITable someTable = presentation.Slides[0].Shapes[0] as ITable; // Let's assume that the first shape on the first slide is a table

// Sets first row cells' font height
PortionFormat portionFormat = new PortionFormat();
portionFormat.FontHeight = 25;
someTable.Rows[0].SetTextFormat(portionFormat);

// Sets the first row cells' text alignment and right margin
ParagraphFormat paragraphFormat = new ParagraphFormat();
paragraphFormat.Alignment = TextAlignment.Right;
paragraphFormat.MarginRight = 20;
someTable.Rows[0].SetTextFormat(paragraphFormat);

// Sets the second row cells' text vertical type
TextFrameFormat textFrameFormat = new TextFrameFormat();
textFrameFormat.TextVerticalType = TextVerticalType.Vertical;
someTable.Rows[1].SetTextFormat(textFrameFormat);

// Saves the presentation to disk
presentation.Save("result.pptx", Aspose.Slides.Export.SaveFormat.Pptx);

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' FontHeight.
  5. Set the first-column cells' Alignment and MarginRight.
  6. Set the second-column cells' TextVerticalType.
  7. Save the modified presentation.

This C# code demonstrates the operation:

// Creates an instance of the Presentation class
Presentation pres = new Presentation();
           
ISlide slide = pres.Slides[0];

ITable someTable = pres.Slides[0].Shapes[0] as ITable; // Let's assume that the first shape on the first slide is a table

// Sets the first column cells' font height
PortionFormat portionFormat = new PortionFormat();
portionFormat.FontHeight = 25;
someTable.Columns[0].SetTextFormat(portionFormat);

// Sets the first column cells' text alignment and right margin in one call
ParagraphFormat paragraphFormat = new ParagraphFormat();
paragraphFormat.Alignment = TextAlignment.Right;
paragraphFormat.MarginRight = 20;
someTable.Columns[0].SetTextFormat(paragraphFormat);

// Sets the second column cells' text vertical type
TextFrameFormat textFrameFormat = new TextFrameFormat();
textFrameFormat.TextVerticalType = TextVerticalType.Vertical;
someTable.Columns[1].SetTextFormat(textFrameFormat);

// Saves the presentation to disk
pres.Save("result.pptx", Aspose.Slides.Export.SaveFormat.Pptx);

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 C# code shows you how to get the style properties from a table preset style:

using (Presentation pres = new Presentation())
{
    ITable table = pres.Slides[0].Shapes.AddTable(10, 10, new double[] { 100, 150 }, new double[] { 5, 5, 5 });
    table.StylePreset = TableStylePreset.DarkStyle1; // change the default style preset theme 
    pres.Save("table.pptx", SaveFormat.Pptx);
}
Manage Table Manage Cells