C＃-以编程方式创建SQL Server表 [英] C# - Create SQL Server table programmatically

问题描述

我正在尝试以编程方式创建SQL Server表。这是代码。

I am trying to create a SQL Server table programmatically. Here is the code.

using (SqlConnection con = new SqlConnection(conStr))
{

    try
    {
        //
        // Open the SqlConnection.
        //
        con.Open();
        //
        // The following code uses an SqlCommand based on the SqlConnection.
        //
        using (SqlCommand command = new SqlCommand("CREATE TABLE Customer(First_Name char(50),Last_Name char(50),Address char(50),City char(50),Country char(25),Birth_Date datetime);", con))
            command.ExecuteNonQuery();

    }
    catch (Exception ex)
    {
        MessageBox.Show(ex.Message);
    }
}

当我第二次运行此应用程序时， m出现异常：

When I'm running this application second time I'm getting an exception:

数据库中已经有一个名为'Customer'的对象

"There is already an object named 'Customer' in the database"

但是当我检查数据库时，我没有看到这样的表。

这是我的连接字符串。

but when I check database I don't see such a table.
Here is my connection string.

<connectionStrings>
  <add name ="AutoRepairSqlProvider" connectionString=
     "Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\AutoRepairDatabase.mdf;
     Integrated Security=True;User Instance=True"/>
</connectionStrings>

当我运行选择查询时；我从现有表中获取结果，因此我认为连接字符串应该可以。希望您会看到问题：/

When I am running select query; I am getting results from existing tables so I think connection string should be OK. Hope you'll see the problem :/

推荐答案

您没有提到初始目录连接字符串中的名称。将数据库名称命名为初始目录名称。

You haven't mentioned the Initial catalog name in the connection string. Give your database name as Initial Catalog name.

<add name ="AutoRepairSqlProvider" connectionString=
     "Data Source=.\SQLEXPRESS; Initial Catalog=MyDatabase; AttachDbFilename=|DataDirectory|\AutoRepairDatabase.mdf;
     Integrated Security=True;User Instance=True"/>

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