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我正在使用长 varchar 列来存储日志信息。现在我想使用 DataReader 将它检索到 C# 中的字符串。但是,有一个错误:
请求检索已被访问的 BLOB 列。BLOB 列只能访问一次。
Maybe this url will help you:
Retrieving ntext, text, or image Values
Best regards