c# - 如何从 SQL Server 2008 错误代码中识别主键重复项？

Question

我想知道我们如何从 C# 中的 SQL Server 错误代码中识别主键重复错误。

举个例子，我有一个C#表单向SQL Server数据库录入数据，当录入数据发生错误时，如何从异常中找出错误原因？

Answer 1

如果你抓到 SqlException然后查看它的编号，编号2627 表示违反唯一约束(包括主键)。

try
{
    // insertion code
}
catch (SqlException ex)
{
    if (ex.Number == 2627)
    {
        //Violation of primary key. Handle Exception
    }
    else throw;
}

MSSQL_ENG002627

This is a general error that can be raised regardless of whether a database is replicated. In replicated databases, the error is typically raised because primary keys have not been managed appropriately across the topology.