﻿ RotatePage Method (GdPicturePDF) - GdPicture.NET API Reference
GdPicture.NET.14
GdPicture14 Namespace / GdPicturePDF Class / RotatePage Method
The rotation angle, in degrees, determining the clockwise rotation. This parameter can be set to 90, -90, 180, -180, 270, -270 or any multiple of 90.
Example

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RotatePage Method (GdPicturePDF)
In This Topic
Rotates clockwise the currently selected page of the loaded PDF document. The rotation angle can be set to 90, 180 or 270 degrees.
Syntax
```'Declaration

Public Function RotatePage( _
ByVal Rotation As Integer _
) As GdPictureStatus```
```public GdPictureStatus RotatePage(
int Rotation
)```
```public function RotatePage(
Rotation: Integer
): GdPictureStatus; ```
```public function RotatePage(
Rotation : int
) : GdPictureStatus;```
```public: GdPictureStatus RotatePage(
int Rotation
) ```
```public:
GdPictureStatus RotatePage(
int Rotation
) ```

Parameters

Rotation
The rotation angle, in degrees, determining the clockwise rotation. This parameter can be set to 90, -90, 180, -180, 270, -270 or any multiple of 90.

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.

Remarks
This method is only allowed for use with non-encrypted documents.

This method requires the Document Editor component to run.

Example
How to rotate all pages of your document step by step by multiple of 90 degrees, that means each page is rotated by next (means page number) multiple of 90. You can subsequently determine the actual page rotation.
```Dim caption As String = "Example: RotatePage"
Dim gdpicturePDF As New GdPicturePDF()
If gdpicturePDF.LoadFromFile("test.pdf", False) = GdPictureStatus.OK Then
Dim count As Integer = gdpicturePDF.GetPageCount()
Dim status As GdPictureStatus = gdpicturePDF.GetStat()
If status = GdPictureStatus.OK Then
For i As Integer = 1 To count
status = gdpicturePDF.SelectPage(i)
If status = GdPictureStatus.OK Then
status = gdpicturePDF.RotatePage(i * 90)
If status = GdPictureStatus.OK Then
Dim rotation As Integer = gdpicturePDF.GetPageRotation()
status = gdpicturePDF.GetStat()
If status = GdPictureStatus.OK Then
MessageBox.Show("The rotation angle of the page nr." + i.ToString() + " is " + rotation.ToString() + " degrees.", caption)
Else
MessageBox.Show("The GetPageRotation() method has failed with the status: " + status.ToString(), caption)
End If
If i = count Then
If gdpicturePDF.SaveToFile("test_RotatePage.pdf") = GdPictureStatus.OK Then
MessageBox.Show("The pages have been rotated successfully and the file has been saved.", caption)
Else
MessageBox.Show("The pages have been rotated successfully but the file can't be saved.", caption)
End If
End If
Else
MessageBox.Show("The RotatePage() method has failed with the status: " + status.ToString(), caption)
Exit For
End If
Else
MessageBox.Show("The SelectPage() method has failed with the status: " + status.ToString(), caption)
Exit For
End If
Next
Else
MessageBox.Show("The GetPageCount() method has failed with the status: " + status.ToString(), caption)
End If
Else
MessageBox.Show("The file can't be loaded.", caption)
End If
gdpicturePDF.Dispose()```
```string caption = "Example: RotatePage";
GdPicturePDF gdpicturePDF = new GdPicturePDF();
{
int count = gdpicturePDF.GetPageCount();
GdPictureStatus status = gdpicturePDF.GetStat();
if (status == GdPictureStatus.OK)
{
for (int i = 1; i <= count; i++)
{
status = gdpicturePDF.SelectPage(i);
if (status == GdPictureStatus.OK)
{
status = gdpicturePDF.RotatePage(i*90);
if (status == GdPictureStatus.OK)
{
int rotation = gdpicturePDF.GetPageRotation();
status = gdpicturePDF.GetStat();
if (status == GdPictureStatus.OK)
MessageBox.Show("The rotation angle of the page nr." + i.ToString() + " is " + rotation.ToString() + " degrees.", caption);
else
MessageBox.Show("The GetPageRotation() method has failed with the status: " + status.ToString(), caption);
if (i == count)
{
if (gdpicturePDF.SaveToFile("test_RotatePage.pdf") == GdPictureStatus.OK)
MessageBox.Show("The pages have been rotated successfully and the file has been saved.", caption);
else
MessageBox.Show("The pages have been rotated successfully but the file can't be saved.", caption);
}
}
else
{
MessageBox.Show("The RotatePage() method has failed with the status: " + status.ToString(), caption);
break;
}
}
else
{
MessageBox.Show("The SelectPage() method has failed with the status: " + status.ToString(), caption);
break;
}
}
}
else
MessageBox.Show("The GetPageCount() method has failed with the status: " + status.ToString(), caption);
}
else
MessageBox.Show("The file can't be loaded.", caption);
gdpicturePDF.Dispose();```