c#datetimepicker查询access数据库失败

在 C# 中，如果你使用 DateTimePicker 控件获取用户选择的时间并试图通过 ADO.NET（如 OleDb 或 ODBC）连接 Access 数据库来查询数据，可能会遇到一些问题。常见的问题包括：

1. 数据库连接字符串错误：确保你的连接字符串包含了正确的数据库路径、用户名、密码和表名。

string connectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=<your_database.accdb>;Persist Security Info=False;";

2. 字段名称匹配：DateTimePicker 的值需要转换成 Access 能识别的格式，并且字段名称需对应数据库中的时间字段。

DateTime selectedDate = dateTimePicker.Value;
string query = "SELECT * FROM YourTable WHERE YourDateTimeField = #" + selectedDate.ToString("yyyy-MM-dd") + "#";

3. 查询语法错误：检查 SQL 查询语句是否正确，Access 数据库可能对某些日期函数有不同的语法。

4. 权限问题：确认所使用的用户账户是否有足够的权限访问指定的数据表。

5. 程序异常处理不足：捕获可能出现的 `OleDbException` 或其他异常，并妥善处理。

如果查询仍然失败，可以尝试：

相关问题

C#中 实现 button1 数据库查出来 在datetimepicker1和 datetimepicker2时间之间 结果显示在textbox1中 数据库 InterSystems CACHE 名称 dhc-app 地址 10.160.5.21 用户名 _system 密码

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