Details
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New Feature
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Resolution: Unresolved
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Unknown
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None
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None
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None
Description
Currently I can use UpdateBuilder to update document,but how can I tell it use value of field B o update field A?
// code placeholder
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var builder = Builders<T>.Update;
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//Seems builder.Set("A","$B");
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// will update value of field 'A' to be '$B', but not the value of field B
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