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Render Slide As Thumbnail to JPEG by User defined Values
Aspose edited this page Mar 4, 2014
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To generate the thumbnail of any desired slide using Aspose.Slides for .NET:
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Create an instance of the Presentation class.
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Obtain the reference of any desired slide by using its ID or index.
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Get the X and Y scaling factors based on user defined X and Y dimensions.
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Get the thumbnail image of the referenced slide on a specified scale.
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Save the thumbnail image in any desired image format.
//Instantiate a Presentation class that represents the presentation file
using (PresentationEx pres = new PresentationEx("Slides Test Presentation.pptx"))
{
//Access the first slide
SlideEx sld = pres.Slides[0];
//User defined dimension
int desiredX = 1200;
int desiredY = 800;
//Getting scaled value of X and Y
float ScaleX = (float)(1.0 / pres.SlideSize.Size.Width) * desiredX;
float ScaleY = (float)(1.0 / pres.SlideSize.Size.Height) * desiredY;
//Create a full scale image
Bitmap bmp = sld.GetThumbnail(ScaleX, ScaleY);
//Save the image to disk in JPEG format
bmp.Save("Thumbnail2.jpg", System.Drawing.Imaging.ImageFormat.Jpeg);
}
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