ResetFormFieldDefaultCheckedState Method (GdPicturePDF)
In This Topic
Resets, in other words completely removes the currently defined default selection of a required form field, here a radio button. That means no child button in a group
of radio buttons within a radio button field stays selected by default using this method. The radio button group or the child radio button in this group is specified by its unique
form field's identifier and it is related to the currently loaded PDF document. As said, this method is explicitly applicable to radio button form field objects and their child buttons as well.
Syntax
'Declaration
Public Function ResetFormFieldDefaultCheckedState( _
ByVal As Integer _
) As GdPictureStatus
public GdPictureStatus ResetFormFieldDefaultCheckedState(
int
)
public function ResetFormFieldDefaultCheckedState(
: Integer
): GdPictureStatus;
public function ResetFormFieldDefaultCheckedState(
: int
) : GdPictureStatus;
public: GdPictureStatus ResetFormFieldDefaultCheckedState(
int
)
public:
GdPictureStatus ResetFormFieldDefaultCheckedState(
int
)
Parameters
- FieldId
- A unique form field identifier specifying a required form field object. You can obtain this identifier using these methods: GdPicturePDF.AddRadioButtonFormField, GdPicturePDF.GetFormFieldId or GdPicturePDF.GetFormFieldChildID.
You can use either the identifier of the required radio button field or its child button as well.
Return Value
A member of the GdPictureStatus enumeration. If the method has been successfully followed, then the return value is GdPictureStatus.OK.
We strongly recommend always checking this status first.
Example
How to reset all radio buttons in the current document to be not checked by default. All radio buttons are completely unchecked.
Dim caption As String = "Example: ResetFormFieldDefaultCheckedState"
Dim gdpicturePDF As GdPicturePDF = New GdPicturePDF()
If gdpicturePDF.LoadFromFile("forms.pdf", False) = GdPictureStatus.OK Then
Dim count As Integer = gdpicturePDF.GetFormFieldsCount()
If gdpicturePDF.GetStat() = GdPictureStatus.OK Then
Dim message As String = "This document contains " + count.ToString() + " form fields." + vbCrLf
Dim formID As Integer = 0, childCount As Integer = 0, radioButtons As Integer = 0
Dim type As PdfFormFieldType = PdfFormFieldType.PdfFormFieldTypeUnknown
Dim defChecked As Boolean = False, isChanged As Boolean = False
For i As Integer = 0 To count - 1
formID = gdpicturePDF.GetFormFieldId(i)
If gdpicturePDF.GetStat() = GdPictureStatus.OK Then
type = gdpicturePDF.GetFormFieldType(formID)
If gdpicturePDF.GetStat() = GdPictureStatus.OK Then
If type = PdfFormFieldType.PdfFormFieldTypeRadioButton Then
radioButtons += 1
childCount = gdpicturePDF.GetFormFieldChildCount(formID)
If gdpicturePDF.GetStat() = GdPictureStatus.OK Then
For j As Integer = 0 To childCount - 1
defChecked = gdpicturePDF.GetFormFieldDefaultChecked(formID, j)
If gdpicturePDF.GetStat() = GdPictureStatus.OK Then
If defChecked Then
'Removing the current default selection for the given radio button completely.
If gdpicturePDF.ResetFormFieldDefaultCheckedState(formID) = GdPictureStatus.OK Then
message = message + (i + 1).ToString() + ". rb group has been changed successfully." + vbCrLf
isChanged = True
'Removing the current selection for the given radio button completely.
If gdpicturePDF.ResetFormFieldCheckedState(formID) <> GdPictureStatus.OK Then
MessageBox.Show(message + "Something has failed in unchecking buttons with the status: " + gdpicturePDF.GetStat().ToString(), caption)
End If
Else
MessageBox.Show(message + "Something has failed in changing default settings with the status: " + gdpicturePDF.GetStat().ToString(), caption)
End If
'Only one radio button can be checked by default at a time.
Exit For
End If
Else
MessageBox.Show(message + " The GetFormFieldDefaultChecked() method failed with the status: " + gdpicturePDF.GetStat().ToString(), caption)
End If
Next
Else
MessageBox.Show(message + "The GetFormFieldChildCount() method has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption)
Exit For
End If
End If
Else
MessageBox.Show("The GetFormFieldType() method has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption)
Exit For
End If
Else
MessageBox.Show("The GetFormFieldId() method has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption)
Exit For
End If
Next
If gdpicturePDF.GetStat() = GdPictureStatus.OK Then
If radioButtons = 0 Then
message = message + "This document does not contain radio buttons." + vbCrLf
ElseIf Not isChanged Then
message = message + "This document has not been changed."
Else
If gdpicturePDF.SaveToFile("forms_updated.pdf") = GdPictureStatus.OK Then
message = message + "The example has been followed successfully and the file has been saved."
Else
message = message + "The example has been followed successfully, but the file can't be saved. Status: " + gdpicturePDF.GetStat().ToString()
End If
End If
MessageBox.Show(message, caption)
End If
Else
MessageBox.Show("The GetFormFieldsCount() method has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption)
End If
Else
MessageBox.Show("The file can't be loaded.", caption)
End If
gdpicturePDF.Dispose()
string caption = "Example: ResetFormFieldDefaultCheckedState";
GdPicturePDF gdpicturePDF = new GdPicturePDF();
if (gdpicturePDF.LoadFromFile("forms.pdf", false) == GdPictureStatus.OK)
{
int count = gdpicturePDF.GetFormFieldsCount();
if (gdpicturePDF.GetStat() == GdPictureStatus.OK)
{
string message = "This document contains " + count.ToString() + " form fields.\n";
int formID = 0, childCount = 0, radioButtons = 0;
PdfFormFieldType type = PdfFormFieldType.PdfFormFieldTypeUnknown;
bool defChecked = false, isChanged = false;
for (int i = 0; i < count; i++)
{
formID = gdpicturePDF.GetFormFieldId(i);
if (gdpicturePDF.GetStat() == GdPictureStatus.OK)
{
type = gdpicturePDF.GetFormFieldType(formID);
if (gdpicturePDF.GetStat() == GdPictureStatus.OK)
{
if (type == PdfFormFieldType.PdfFormFieldTypeRadioButton)
{
radioButtons++;
childCount = gdpicturePDF.GetFormFieldChildCount(formID);
if (gdpicturePDF.GetStat() == GdPictureStatus.OK)
{
for (int j = 0; j < childCount; j++)
{
defChecked = gdpicturePDF.GetFormFieldDefaultChecked(formID, j);
if (gdpicturePDF.GetStat() == GdPictureStatus.OK)
{
if (defChecked)
{
//Removing the current default selection for the given radio button completely.
if (gdpicturePDF.ResetFormFieldDefaultCheckedState(formID) == GdPictureStatus.OK)
{
message = message + (i + 1).ToString() + ". rb group has been changed successfully.\n";
isChanged = true;
//Removing the current selection for the given radio button completely.
if (gdpicturePDF.ResetFormFieldCheckedState(formID) != GdPictureStatus.OK)
MessageBox.Show(message + "Something has failed in unchecking buttons with the status: " + gdpicturePDF.GetStat().ToString(), caption);
}
else
MessageBox.Show(message + "Something has failed in changing default settings with the status: " + gdpicturePDF.GetStat().ToString(), caption);
break; //Only one radio button can be checked by default at a time.
}
}
else
MessageBox.Show(message + " The GetFormFieldDefaultChecked() method failed with the status: " + gdpicturePDF.GetStat().ToString(), caption);
}
}
else
{
MessageBox.Show(message + "The GetFormFieldChildCount() method has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption);
break;
}
}
}
else
{
MessageBox.Show("The GetFormFieldType() method has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption);
break;
}
}
else
{
MessageBox.Show("The GetFormFieldId() method has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption);
break;
}
}
if (gdpicturePDF.GetStat() == GdPictureStatus.OK)
{
if (radioButtons == 0) message = message + "This document does not contain radio buttons.\n";
else if (!isChanged) message = message + "This document has not been changed.";
else
{
if (gdpicturePDF.SaveToFile("forms_updated.pdf") == GdPictureStatus.OK)
message = message + "The example has been followed successfully and the file has been saved.";
else
message = message + "The example has been followed successfully, but the file can't be saved. Status: " + gdpicturePDF.GetStat().ToString();
}
MessageBox.Show(message, caption);
}
}
else
MessageBox.Show("The GetFormFieldsCount() method has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption);
}
else
MessageBox.Show("The file can't be loaded.", caption);
gdpicturePDF.Dispose();
Example
How to reset all radio buttons in the current document to be not checked by default. All radio buttons are completely unchecked.
Dim caption As String = "Example: ResetFormFieldDefaultCheckedState"
Dim gdpicturePDF As GdPicturePDF = New GdPicturePDF()
If gdpicturePDF.LoadFromFile("forms.pdf", False) = GdPictureStatus.OK Then
Dim count As Integer = gdpicturePDF.GetFormFieldsCount()
If gdpicturePDF.GetStat() = GdPictureStatus.OK Then
Dim message As String = "This document contains " + count.ToString() + " form fields." + vbCrLf
Dim formID As Integer = 0, childCount As Integer = 0, radioButtons As Integer = 0
Dim type As PdfFormFieldType = PdfFormFieldType.PdfFormFieldTypeUnknown
Dim defChecked As Boolean = False, isChanged As Boolean = False
For i As Integer = 0 To count - 1
formID = gdpicturePDF.GetFormFieldId(i)
If gdpicturePDF.GetStat() = GdPictureStatus.OK Then
type = gdpicturePDF.GetFormFieldType(formID)
If gdpicturePDF.GetStat() = GdPictureStatus.OK Then
If type = PdfFormFieldType.PdfFormFieldTypeRadioButton Then
radioButtons += 1
childCount = gdpicturePDF.GetFormFieldChildCount(formID)
If gdpicturePDF.GetStat() = GdPictureStatus.OK Then
For j As Integer = 0 To childCount - 1
defChecked = gdpicturePDF.GetFormFieldDefaultChecked(formID, j)
If gdpicturePDF.GetStat() = GdPictureStatus.OK Then
If defChecked Then
'Removing the current default selection for the given radio button completely.
If gdpicturePDF.ResetFormFieldDefaultCheckedState(formID) = GdPictureStatus.OK Then
message = message + (i + 1).ToString() + ". rb group has been changed successfully." + vbCrLf
isChanged = True
'Removing the current selection for the given radio button completely.
If gdpicturePDF.ResetFormFieldCheckedState(formID) <> GdPictureStatus.OK Then
MessageBox.Show(message + "Something has failed in unchecking buttons with the status: " + gdpicturePDF.GetStat().ToString(), caption)
End If
Else
MessageBox.Show(message + "Something has failed in changing default settings with the status: " + gdpicturePDF.GetStat().ToString(), caption)
End If
'Only one radio button can be checked by default at a time.
Exit For
End If
Else
MessageBox.Show(message + " The GetFormFieldDefaultChecked() method failed with the status: " + gdpicturePDF.GetStat().ToString(), caption)
End If
Next
Else
MessageBox.Show(message + "The GetFormFieldChildCount() method has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption)
Exit For
End If
End If
Else
MessageBox.Show("The GetFormFieldType() method has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption)
Exit For
End If
Else
MessageBox.Show("The GetFormFieldId() method has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption)
Exit For
End If
Next
If gdpicturePDF.GetStat() = GdPictureStatus.OK Then
If radioButtons = 0 Then
message = message + "This document does not contain radio buttons." + vbCrLf
ElseIf Not isChanged Then
message = message + "This document has not been changed."
Else
If gdpicturePDF.SaveToFile("forms_updated.pdf") = GdPictureStatus.OK Then
message = message + "The example has been followed successfully and the file has been saved."
Else
message = message + "The example has been followed successfully, but the file can't be saved. Status: " + gdpicturePDF.GetStat().ToString()
End If
End If
MessageBox.Show(message, caption)
End If
Else
MessageBox.Show("The GetFormFieldsCount() method has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption)
End If
Else
MessageBox.Show("The file can't be loaded.", caption)
End If
gdpicturePDF.Dispose()
string caption = "Example: ResetFormFieldDefaultCheckedState";
GdPicturePDF gdpicturePDF = new GdPicturePDF();
if (gdpicturePDF.LoadFromFile("forms.pdf", false) == GdPictureStatus.OK)
{
int count = gdpicturePDF.GetFormFieldsCount();
if (gdpicturePDF.GetStat() == GdPictureStatus.OK)
{
string message = "This document contains " + count.ToString() + " form fields.\n";
int formID = 0, childCount = 0, radioButtons = 0;
PdfFormFieldType type = PdfFormFieldType.PdfFormFieldTypeUnknown;
bool defChecked = false, isChanged = false;
for (int i = 0; i < count; i++)
{
formID = gdpicturePDF.GetFormFieldId(i);
if (gdpicturePDF.GetStat() == GdPictureStatus.OK)
{
type = gdpicturePDF.GetFormFieldType(formID);
if (gdpicturePDF.GetStat() == GdPictureStatus.OK)
{
if (type == PdfFormFieldType.PdfFormFieldTypeRadioButton)
{
radioButtons++;
childCount = gdpicturePDF.GetFormFieldChildCount(formID);
if (gdpicturePDF.GetStat() == GdPictureStatus.OK)
{
for (int j = 0; j < childCount; j++)
{
defChecked = gdpicturePDF.GetFormFieldDefaultChecked(formID, j);
if (gdpicturePDF.GetStat() == GdPictureStatus.OK)
{
if (defChecked)
{
//Removing the current default selection for the given radio button completely.
if (gdpicturePDF.ResetFormFieldDefaultCheckedState(formID) == GdPictureStatus.OK)
{
message = message + (i + 1).ToString() + ". rb group has been changed successfully.\n";
isChanged = true;
//Removing the current selection for the given radio button completely.
if (gdpicturePDF.ResetFormFieldCheckedState(formID) != GdPictureStatus.OK)
MessageBox.Show(message + "Something has failed in unchecking buttons with the status: " + gdpicturePDF.GetStat().ToString(), caption);
}
else
MessageBox.Show(message + "Something has failed in changing default settings with the status: " + gdpicturePDF.GetStat().ToString(), caption);
break; //Only one radio button can be checked by default at a time.
}
}
else
MessageBox.Show(message + " The GetFormFieldDefaultChecked() method failed with the status: " + gdpicturePDF.GetStat().ToString(), caption);
}
}
else
{
MessageBox.Show(message + "The GetFormFieldChildCount() method has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption);
break;
}
}
}
else
{
MessageBox.Show("The GetFormFieldType() method has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption);
break;
}
}
else
{
MessageBox.Show("The GetFormFieldId() method has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption);
break;
}
}
if (gdpicturePDF.GetStat() == GdPictureStatus.OK)
{
if (radioButtons == 0) message = message + "This document does not contain radio buttons.\n";
else if (!isChanged) message = message + "This document has not been changed.";
else
{
if (gdpicturePDF.SaveToFile("forms_updated.pdf") == GdPictureStatus.OK)
message = message + "The example has been followed successfully and the file has been saved.";
else
message = message + "The example has been followed successfully, but the file can't be saved. Status: " + gdpicturePDF.GetStat().ToString();
}
MessageBox.Show(message, caption);
}
}
else
MessageBox.Show("The GetFormFieldsCount() method has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption);
}
else
MessageBox.Show("The file can't be loaded.", caption);
gdpicturePDF.Dispose();
See Also
Reference
GdPicturePDF Class
GdPicturePDF Members
AddRadioButtonFormField(Single,Single,Single,Single,String,String,PdfCheckBoxStyle,Byte,Byte,Byte) Method
GetFormFieldId Method
GetFormFieldChildID Method
ResetFormFieldCheckedState Method
GetFormFieldsCount Method
GetFormFieldId Method
GetFormFieldChildCount Method
GetFormFieldType Method
AddRadioButtonFormField(Single,Single,Single,Single,String,String,PdfCheckBoxStyle,Byte,Byte,Byte) Method
GetFormFieldDefaultChecked(Int32) Method
SetFormFieldDefaultChecked(Int32,Boolean) Method
GetFormFieldChecked(Int32) Method
SetFormFieldChecked(Int32,Boolean) Method