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.NET使用 OpenTelemetry Traces 追踪应用程序的方法_实用技巧_脚本之家
using var cmd = new NpgsqlCommand("SELECT * FROM t_users WHERE username = @username AND password = @password", conn); cmd.Parameters.AddWithValue("username", username); cmd.Parameters.AddWithValue("password", password); using var reader = await cmd.ExecuteReaderAsync(); if (reader.Read())...
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