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... wrapper for Ghostscript that sounds like it does what you want and is in C# . ... What it can is to generate the same thumbnail that Windows ... Zero); // create an image to draw the page into var buffer = new Bitmap(doc. By default, the DataGridViewTextBoxColumn allows users to enter any characters, including those that might not be allowed in the current cell. For example, a user might type non-numeric characters in a numeric field, or specify a value that violates a ForeignKeyConstraint or UniqueConstraint defined in the DataSet. The DataGridView handles these problems in different ways: If the edited value can be converted into the required data type (for example, the user has typed text into a numeric column), the user won t be able to commit the change or navigate to another row. Instead, the change must be cancelled, or the value must be edited. If the editing attempt causes an exception, the change will be cancelled immediately after the user attempts to commit it by navigating to another row or pressing Enter. Exceptions can be thrown from the property procedure code of a bound object, or generated if you violate a constraint in a bound DataTable. These common sense defaults work well for most scenarios. However, if necessary, you also can participate in the handling of errors by responding to the DataGridView.DataError event, which fires when the DataGridView intercepts an error from the data source (for example, entering a string instead of a number or violating a constraint in the underlying DataTable). For example, the following DataError event handler catches both of the errors described above when the user edits the CategoryID field of the Products table: private void DataGridView_DataError(object sender, System.Windows.Forms.DataGridViewDataErrorEventArgs e) { // Check if it's an error during the commit stage. if ((e.Context & DataGridViewDataErrorContexts.Commit) == DataGridViewDataErrorContexts.Commit) pdf to thumbnail converter c#: How to convert a PDF document into thumbnail image with specified ... generate pdf thumbnail c# Create Thumbnail Image from PDF using Ghostscript - CodeProject
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