How to add the different check mark style in checkbox field ?

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Check Box Field

We can create the check box field using PdfCheckBoxField Class.

Please refer the below code snippet for adding the check box field in new Pdf document.

//Create a new PDF document.
PdfDocument document = new PdfDocument();
 
//Add a new page to PDF document.
PdfPage page = document.Pages.Add();
 
//Create Check Box field.
PdfCheckBoxField checkBoxField = new PdfCheckBoxField(page, "CheckBox");
 
//Set check box properties.
checkBoxField.ToolTip = "Check Box";
checkBoxField.Bounds = new RectangleF(0, 20, 10, 10);
 
//Add the form field to the document.
document.Form.Fields.Add(checkBoxField);

Checkmark Style

We can add different checkmark styles using PdfCheckBoxStyle enum. Checkmark size is depending on the check box field. Please refer the following code snippet.

//Create Check Box field.
PdfCheckBoxField checkBoxField = new PdfCheckBoxField(page, "CheckBox");
 
//Set Check box properties
checkBoxField.Bounds = new RectangleF (50, 230, 8, 8);checkBoxField.Style = PdfCheckBoxStyle.Cross;

Please find the different checkmark styles for the check box field from PdfCheckBoxStyle enum.

//Create Check Box field.
PdfCheckBoxField checkBoxField = new PdfCheckBoxField(page, "CheckBox");
 
//Set Check box field style
checkBoxField.Style = PdfCheckBoxStyle.Check;
checkBoxField.Style = PdfCheckBoxStyle.Circle;
checkBoxField.Style = PdfCheckBoxStyle.Cross;
checkBoxField.Style = PdfCheckBoxStyle.Diamond;
checkBoxField.Style = PdfCheckBoxStyle.Square;
checkBoxField.Style = PdfCheckBoxStyle.Star;

For example, one check mark style is added to Check Box field can be shown in below code snippet.

//Create a new PDF document.
PdfDocument doc = new PdfDocument();
 
//Add a page.
PdfPage page = doc.Pages.Add();
 
PdfForm form = doc.Form;
 
page.Graphics.DrawString("Qualification:", new PdfStandardFont(PdfFontFamily.Helvetica, 12, PdfFontStyle.Bold), PdfBrushes.Black, new PointF(50, 100));
 
//Create Check box field
PdfCheckBoxField checkField = new PdfCheckBoxField(page, "UG");
 
//Set Check box properties
checkField.Bounds = new RectangleF(50, 130, 8, 8);
checkField.Style = PdfCheckBoxStyle.Cross;
 
page.Graphics.DrawString("UG", new PdfStandardFont(PdfFontFamily.Helvetica, 12, PdfFontStyle.Italic), PdfBrushes.Black, new PointF(80, 130));
 
//Create Check box field
PdfCheckBoxField checkField1 = new PdfCheckBoxField(page, "PG");
 
//Set Check box properties
checkField1.Bounds = new RectangleF(50, 170, 8, 8);
checkField1.Style = PdfCheckBoxStyle.Cross;
 
page.Graphics.DrawString("PG", new PdfStandardFont(PdfFontFamily.Helvetica, 12, PdfFontStyle.Italic), PdfBrushes.Black, new PointF(80, 170));
 
//Add the form field to the document
form.Fields.Add(checkField);
form.Fields.Add(checkField1);

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