将 SQL Server varBinary 数据转换为字符串 C#

Converting SQL Server varBinary data into string C#(将 SQL Server varBinary 数据转换为字符串 C#)

问题描述

我需要帮助弄清楚如何将来自 SQL Server 表列(设置为 varBinary(max))的数据转换为字符串以便显示它在一个标签中.

I need help figuring out how to convert data that comes in from a SQL Server table column that is set as varBinary(max) into a string in order to display it in a label.

这是在 C# 中，我正在使用 DataReader.

This is in C# and I'm using a DataReader.

我可以使用以下方法提取数据:

I can pull the data in using:

var BinaryString = reader[1];

我知道此列包含以前转换为二进制的文本.

i know that this column holds text that was previously convert to binary.

推荐答案

这真的取决于你最初从字符串转换为二进制时使用的编码:

It really depends on which encoding was used when you originally converted from string to binary:

 byte[] binaryString = (byte[])reader[1];

 // if the original encoding was ASCII
 string x = Encoding.ASCII.GetString(binaryString);

 // if the original encoding was UTF-8
 string y = Encoding.UTF8.GetString(binaryString);

 // if the original encoding was UTF-16
 string z = Encoding.Unicode.GetString(binaryString);

 // etc

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