关于c＃：System.ArgumentException值不在预期的范围内，SQL问题

System.ArgumentException Value does not fall within the expected range, SQL issue

我正在使用.NET Compact 3.5 Windows 7 CE。

我有一个大约有50个用户的应用程序，我有它的设置，这样每当数据库事务失败时，我都会收到一封电子邮件，包括查询。

每隔一段时间，我都会收到一封电子邮件，其中包含一个像这样开始的堆栈跟踪：

System.ArgumentException: Value does not fall within the expected range.
at System.Data.SqlClient.SqlParameterCollection.Validate(Int32 index, SqlParameter value)
at System.Data.SqlClient.SqlParameterCollection.AddWithoutEvents(SqlParameter value)
at System.Data.SqlClient.SqlParameterCollection.Add(SqlParameter value)
at MedWMS.Database.startSqlConnection(String query, SqlParameter[] parameters, SqlConnection connection, SqlCommand cmd)
at MedWMS.Database.<>c__DisplayClasse.b__8()
at MedWMS.Database.retry(Action action)
at MedWMS.Database.executeNonQuery(String query, SqlParameter[] parameters, String connectionString)...

导致此问题的SQL查询并不总是相同的。我在SQL Server Management Studio中收到电子邮件后几秒钟运行相同的查询，没有出现任何问题。

我想知道为什么会发生这种情况。这是我第一个问题，所以如果我做错了请告诉我。我很乐意回答任何问题以提供更多细节。

这是导致此错误的代码示例：

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SqlParameter[] parameters = new SqlParameter[1];
parameters[0] = new SqlParameter("@salesOrder", this.salesOrderNumber);

string query = @"
Select InvTermsOverride from SorMaster where SalesOrder = Convert(int, @salesOrder) and InvTermsOverride = '07' --07 is for COD";

DataTable dt = Database.executeSelectQuery(query, parameters, Country.getCurrent().getSysproConnectionStrReportServer());

这是实际传递的查询：

1	Select InvTermsOverride from SorMaster where SalesOrder = Convert(int, '000000001138325') and InvTermsOverride = '07' --07 is for COD

下面是Database类的相关方法：

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public static DataTable executeSelectQuery(String query, SqlParameter[] parameters, string connectionString)
{
DataTable dt = new DataTable();

using (SqlConnection connection = new SqlConnection(connectionString))
{
SqlCommand cmd = null;

try
{
retry(() =>
{
cmd = startSqlConnection(query, parameters, connection, cmd);
using (SqlDataReader reader = cmd.ExecuteReader())
{
dt.Load(reader);
}
});
}
catch (Exception ex)
{
onDbConnectionCatch(cmd, ex);
}
finally
{
cmd.Dispose();
connection.Close();
}
}

return dt;
}

public static void executeNonQuery(String query, SqlParameter[] parameters, string connectionString)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
SqlCommand cmd = null;

try
{
retry(() =>
{
cmd = startSqlConnection(query, parameters, connection, cmd);
cmd.ExecuteNonQuery();
});
}
catch (Exception ex)
{
onDbConnectionCatch(cmd, ex);
}
finally
{
cmd.Dispose();
connection.Close();
}
}
}

private static void retry(Action action)
{
int retryCount = 3;
int retryInterval = 1000;
Exception lastException = null;

for (int retry = 0; retry < retryCount; retry++)
{
try
{
if (retry > 0)
System.Threading.Thread.Sleep(retryInterval);
action();

lastException = null;
return;
}
catch (Exception ex)
{
lastException = ex;
}
}

if (lastException != null)
{
throw lastException;
}
}

private static SqlCommand startSqlConnection(String query, SqlParameter[] parameters, SqlConnection connection, SqlCommand cmd)
{
if (connection.State != ConnectionState.Open)
{
connection.Open();
}

cmd = new SqlCommand(query, connection);

if (parameters != null)
{
foreach (SqlParameter sp in parameters)
{
if (sp != null)
{
cmd.Parameters.Add(sp);
}
}
}

return cmd;
}

private static void onDbConnectionCatch(SqlCommand cmd, Exception ex)
{
try
{
new BigButtonMessageBox("","Unable connect to database").ShowDialog();
sendEmailWithSqlQuery(cmd, ex);
}
catch
{
}
}

private static void sendEmailWithSqlQuery(SqlCommand cmd, Exception ex)
{
string query2 ="cmd was null";

if (cmd != null)
{
query2 = cmd.CommandText;

foreach (SqlParameter p in cmd.Parameters)
{
query2 = query2.Replace(p.ParameterName,"'" + p.Value.ToString() +"'");
}
}

InternetTools.sendEmail("DB ERROR", ex.ToString() +"

" + query2);
}