TextBox.GetEquationParagraph

GetEquationParagraph(int)

Get the specified math paragraph from the TextBody property of the TextBox object. Notice: (1) Returns NULL when the index is out of bounds or not found. (2) Also returns NULL if the specified index position is not a math paragraph.

public EquationNode GetEquationParagraph(int index)
ParameterTypeDescription
indexInt32The position index of the math paragraph, starting from 0.

Return Value

Returns the math paragraph specified by index.

Examples

namespace AsposeCellsExamples
{
    using Aspose.Cells;
    using Aspose.Cells.Drawing;
    using Aspose.Cells.Drawing.Equations;
    using System;

    public class TextBoxMethodGetEquationParagraphWithInt32Demo
    {
        public static void Run()
        {
            // Create a new workbook
            Workbook workbook = new Workbook();
            Worksheet worksheet = workbook.Worksheets[0];

            // Add a textbox to the worksheet
            TextBox textBox = worksheet.Shapes.AddTextBox(0, 0, 100, 100, 200, 50);

            // Add some equation content to the textbox
            textBox.Text = "\\sqrt{x^2 + y^2}";

            try
            {
                // Call GetEquationParagraph with index parameter (Int32)
                EquationNode equationNode = textBox.GetEquationParagraph(0);

                if (equationNode != null)
                {
                    Console.WriteLine("Equation paragraph retrieved successfully.");
                    Console.WriteLine($"Equation type: {equationNode.EquationType}");
                    Console.WriteLine($"LaTeX representation: {equationNode.ToLaTeX()}");
                }
                else
                {
                    Console.WriteLine("No equation paragraph found at the specified index.");
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine($"Error executing GetEquationParagraph method: {ex.Message}");
            }

            // Save the workbook
            workbook.Save("TextBoxMethodGetEquationParagraphWithInt32Demo.xlsx");
        }
    }
}

See Also

GetEquationParagraph()

Gets the first math paragraph from the TextBody property of the TextBox object.

public EquationNode GetEquationParagraph()

Return Value

If there has math paragraph, returns the first one, otherwise returns null.

Examples

using System;
using Aspose.Cells;
using Aspose.Cells.Drawing;
using Aspose.Cells.Drawing.Equations;

namespace AsposeCellsExamples
{
    public class TextBoxMethodGetEquationParagraphDemo
    {
        public static void Run()
        {
            Workbook workbook = new Workbook();
            Worksheet worksheet = workbook.Worksheets[0];
            
            int textBoxIndex = worksheet.TextBoxes.Add(5, 5, 200, 200);
            TextBox textBox = worksheet.TextBoxes[textBoxIndex];
            textBox.Text = "$$\\sqrt{x^2+y^2}$$";
            
            EquationNode equationNode = textBox.GetEquationParagraph();
            
            if (equationNode != null)
            {
                Console.WriteLine("Equation LaTeX: " + equationNode.ToLaTeX());
                Console.WriteLine("Equation MathML: " + equationNode.ToMathML());
            }
            else
            {
                Console.WriteLine("No equation paragraph found");
            }
        }
    }
}

See Also