TextInputDefault

FormField.TextInputDefault property

Gets or sets the default string or a calculation expression of a text form field.

public string TextInputDefault { get; set; }

Remarks

The meaning of this property depends on the value of the TextInputType property.

When TextInputType is Regular or Number, this string specifies the default string for the text form field. This string is the content that Microsoft Word will display in the document when the form field is empty.

When TextInputType is Calculated, then this string holds the expression to be calculated. The expression needs to be a formula valid according to Microsoft Word formula field requirements. When you set a new expression using this property, Aspose.Words calculates the formula result automatically and inserts it into the form field.

Microsoft Word allows strings with at most 255 characters.

Examples

Shows how insert different kinds of form fields into a document, and process them with using a document visitor implementation.

public void Visitor()
{
    Document doc = new Document();
    DocumentBuilder builder = new DocumentBuilder(doc);

    // Use a document builder to insert a combo box.
    builder.Write("Choose a value from this combo box: ");
    FormField comboBox = builder.InsertComboBox("MyComboBox", new[] { "One", "Two", "Three" }, 0);
    comboBox.CalculateOnExit = true;
    Assert.AreEqual(3, comboBox.DropDownItems.Count);
    Assert.AreEqual(0, comboBox.DropDownSelectedIndex);
    Assert.True(comboBox.Enabled);

    builder.InsertBreak(BreakType.ParagraphBreak);

    // Use a document builder to insert a check box.
    builder.Write("Click this check box to tick/untick it: ");
    FormField checkBox = builder.InsertCheckBox("MyCheckBox", false, 50);
    checkBox.IsCheckBoxExactSize = true;
    checkBox.HelpText = "Right click to check this box";
    checkBox.OwnHelp = true;
    checkBox.StatusText = "Checkbox status text";
    checkBox.OwnStatus = true;
    Assert.AreEqual(50.0d, checkBox.CheckBoxSize);
    Assert.False(checkBox.Checked);
    Assert.False(checkBox.Default);

    builder.InsertBreak(BreakType.ParagraphBreak);

    // Use a document builder to insert text input form field.
    builder.Write("Enter text here: ");
    FormField textInput = builder.InsertTextInput("MyTextInput", TextFormFieldType.Regular, "", "Placeholder text", 50);
    textInput.EntryMacro = "EntryMacro";
    textInput.ExitMacro = "ExitMacro";
    textInput.TextInputDefault = "Regular";
    textInput.TextInputFormat = "FIRST CAPITAL";
    textInput.SetTextInputValue("New placeholder text");
    Assert.AreEqual(TextFormFieldType.Regular, textInput.TextInputType);
    Assert.AreEqual(50, textInput.MaxLength);

    // This collection contains all our form fields.
    FormFieldCollection formFields = doc.Range.FormFields;
    Assert.AreEqual(3, formFields.Count);

    // Fields display our form fields. We can see their field codes by opening this document
    // in Microsoft and pressing Alt + F9. These fields have no switches,
    // and members of the FormField object fully govern their form fields' content.
    Assert.AreEqual(3, doc.Range.Fields.Count);
    Assert.AreEqual(" FORMDROPDOWN \u0001", doc.Range.Fields[0].GetFieldCode());
    Assert.AreEqual(" FORMCHECKBOX \u0001", doc.Range.Fields[1].GetFieldCode());
    Assert.AreEqual(" FORMTEXT \u0001", doc.Range.Fields[2].GetFieldCode());

    // Allow each form field to accept a document visitor.
    FormFieldVisitor formFieldVisitor = new FormFieldVisitor();

    using (IEnumerator<FormField> fieldEnumerator = formFields.GetEnumerator())
        while (fieldEnumerator.MoveNext())
            fieldEnumerator.Current.Accept(formFieldVisitor);

    Console.WriteLine(formFieldVisitor.GetText());

    doc.UpdateFields();
    doc.Save(ArtifactsDir + "FormFields.Visitor.html");
}

/// <summary>
/// Visitor implementation that prints details of form fields that it visits. 
/// </summary>
public class FormFieldVisitor : DocumentVisitor
{
    public FormFieldVisitor()
    {
        mBuilder = new StringBuilder();
    }

    /// <summary>
    /// Called when a FormField node is encountered in the document.
    /// </summary>
    public override VisitorAction VisitFormField(FormField formField)
    {
        AppendLine(formField.Type + ": \"" + formField.Name + "\"");
        AppendLine("\tStatus: " + (formField.Enabled ? "Enabled" : "Disabled"));
        AppendLine("\tHelp Text:  " + formField.HelpText);
        AppendLine("\tEntry macro name: " + formField.EntryMacro);
        AppendLine("\tExit macro name: " + formField.ExitMacro);

        switch (formField.Type)
        {
            case FieldType.FieldFormDropDown:
                AppendLine("\tDrop-down items count: " + formField.DropDownItems.Count + ", default selected item index: " + formField.DropDownSelectedIndex);
                AppendLine("\tDrop-down items: " + string.Join(", ", formField.DropDownItems.ToArray()));
                break;
            case FieldType.FieldFormCheckBox:
                AppendLine("\tCheckbox size: " + formField.CheckBoxSize);
                AppendLine("\t" + "Checkbox is currently: " + (formField.Checked ? "checked, " : "unchecked, ") + "by default: " + (formField.Default ? "checked" : "unchecked"));
                break;
            case FieldType.FieldFormTextInput:
                AppendLine("\tInput format: " + formField.TextInputFormat);
                AppendLine("\tCurrent contents: " + formField.Result);
                break;
        }

        // Let the visitor continue visiting other nodes.
        return VisitorAction.Continue;
    }

    /// <summary>
    /// Adds newline char-terminated text to the current output.
    /// </summary>
    private void AppendLine(string text)
    {
        mBuilder.Append(text + '\n');
    }

    /// <summary>
    /// Gets the plain text of the document that was accumulated by the visitor.
    /// </summary>
    public string GetText()
    {
        return mBuilder.ToString();
    }

    private readonly StringBuilder mBuilder;
}

See Also