Web Reference: Penulis memberikan tutorial untuk mengatasi error Conversion from type ‘DBNull’ to type [tipe data] is not valid pada VB.Net dengan menggunakan kode perintah yaitu IsDbNull. Apr 25, 2014 · This works very well when your eventual target and the source data are already strings, because any extra .ToString() call for something that's already a string is likely to be optimized into a no-op by the jitter, and if it's NULL the resulting DBNull.Value.ToString() expression produces the empty string you want. Because DBNull.Value cannot be directly cast to an integer, your application crashes. In this article, we will implement a robust pattern to handle these nulls by defaulting them to 0, and we will look at how to structure your data access code using a safe Try-Catch architecture.
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