Thank you for writing.
In order to achieve the desired image alignment, it is necessary to set the DocumentWindow.TabStripItem.TextImageRelation
property to TextImageRelation.ImageBeforeText
document.TabStripItem.TextImageRelation = TextImageRelation.ImageBeforeText;
document.Image = Properties.Resources.new_file;
I hope this information helps. Should you have further questions, I would be glad to help.
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