SqlDataAdapter 未填充 DataSet-C#/.NET问题

SqlDataAdapter does not fill DataSet(SqlDataAdapter 未填充 DataSet)

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问题描述

我正在使用 VS2012 和 SQL Server Express 2008.我已经总结了我的连接/查询，试图找出我的 DataSet 没有被填充的原因.连接成功完成，没有抛出异常，但是适配器没有填充DataSet.从中提取的数据库位于同一台 PC 上，并且使用 localhostSQLEXPRESS 不会更改结果.感谢您的任何意见！

I'm using VS2012 and SQL Server Express 2008. I've boiled down my connection/query to try and find out why my DataSet is not being filled. The connection is completed successfully, and no exceptions are thrown, but the adapter does not fill the DataSet. The database that this is pulling from is on the same PC and using localhostSQLEXPRESS does not change the result. Thanks for any input!

SqlConnection questionConnection = new SqlConnection(ConfigurationManager.ConnectionStrings["DefaultConnection"].ConnectionString);
questionConnection.Open();
String sql = "SELECT * FROM HRA.dbo.Questions";
SqlDataAdapter adapter = new SqlDataAdapter();
DataSet ds = new DataSet();
SqlCommand command = new SqlCommand(sql, questionConnection);
adapter.SelectCommand = command;
adapter.Fill(ds);
adapter.Dispose();
command.Dispose();
questionConnection.Close();

连接字符串:

<add name="DefaultConnection" providerName="System.Data.SqlClient" connectionString="Data Source=CODING-PCSQLEXPRESS;Initial Catalog=HRA;User ID=sa; Password= TEST" />

推荐答案

试试这个:

SqlConnection questionConnection = new SqlConnection(ConfigurationManager.ConnectionStrings["DefaultConnection"].ConnectionString);
questionConnection.Open();
DataSet ds = new DataSet();
String sql = "SELECT * FROM HRA.dbo.Questions";
SqlDataAdapter adapter = new SqlDataAdapter(sql, questionConnection);
adapter.Fill(ds);

adapter.Dispose();
command.Dispose();
questionConnection.Close();

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