{"id":362,"date":"2010-10-01T02:11:37","date_gmt":"2010-10-01T02:11:37","guid":{"rendered":"http:\/\/enjoyasp.net\/?p=362"},"modified":"2010-10-01T02:11:37","modified_gmt":"2010-10-01T02:11:37","slug":"dataadapter%ef%bc%8c-dataset-sqldatereader-datatable-dataview%e6%93%8d%e4%bd%9c","status":"publish","type":"post","link":"https:\/\/enjoyasp.net\/index.php\/2010\/10\/01\/dataadapter%ef%bc%8c-dataset-sqldatereader-datatable-dataview%e6%93%8d%e4%bd%9c\/","title":{"rendered":"DataAdapter\uff0c DataSet, SqlDateReader, DataTable, DataView\u64cd\u4f5c"},"content":{"rendered":"<p>DataAdapter:? \u83b7\u53d6\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e<br \/>\nDataSet, SqlDateReader, DataTable\u5b58\u50a8DataAdapter\u5f97\u6765\u7684\u6570\u636e\u3002<\/p>\n<p>1\uff0c\u901a\u8fc7 DataAdapter \u4f7f\u7528\u6570\u636e\u6e90\u4e2d\u7684\u6570\u636e\u751f\u6210\u548c\u586b\u5145 DataSet \u4e2d\u7684\u6bcf\u4e2a DataTable\u3002<br \/>\n??? SqlDataAdapter da = new SqlDataAdapter(cmd);<br \/>\n??? DataSet ds = new DataSet(); da.Fill(ds);<\/p>\n<p>2, SqlDataReader\u7684\u521b\u5efa\u5fc5\u987b\u8c03\u7528 SqlCommand \u5bf9\u8c61\u7684 ExecuteReader\u65b9\u6cd5\uff0c\u800c\u4e0d\u662f\u7528new<\/p>\n<p>DataSet\u4e0eDataReader\u533a\u522b\uff1a<\/p>\n<ul>\n<li>DataReader\u4f7f\u7528\u65f6\u59cb\u7ec8\u5360\u7528SqlConnection,\u5728\u7ebf\u64cd\u4f5c\u6570\u636e\u5e93.DataSet\u5219\u662f\u5c06\u6570\u636e\u4e00\u6b21\u6027\u52a0\u8f7d\u5728\u5185\u5b58 \u4e2d.\u652f\u6301\u6570\u636e\u5e93\u8bbf\u95ee\u7684\u65ad\u5f00\u8fde\u63a5\u6a21\u578b.<\/li>\n<li>DataReader\u6bcf\u6b21\u53ea\u5728\u5185\u5b58\u4e2d\u52a0\u8f7d\u4e00\u6761\u6570\u636e,\u8282\u7ea6\u5185\u5b58.DataSet\u5c06\u6570\u636e\u5168\u90e8\u52a0\u8f7d\u5728\u5185\u5b58\u4e2d.\u6bd4\u8f83\u6d88\u8017\u5185\u5b58.<\/li>\n<li><strong>DataReader\u5355\u5411\u53ea\u8bfb.DataSet\u652f\u6301\u67e5\u8be2\\\u4fee\u6539\\\u5220\u9664\u7b49\u64cd\u4f5c,\u6bd4\u8f83\u7075\u6d3b.<\/strong><\/li>\n<li>DataReader\u63d0\u4f9b\u4e86\u5feb\u901f\u5411\u524d\u7684\u6e38\u6807\u98ce\u683c\u7684\u6570\u636e\u8bbf\u95ee\uff0c\u6545\u4e0d\u80fd\u7528\u6765\u5206\u9875\uff0c\u5206\u9875\u65f6\u8981\u8f6c\u4e3aDataTable<\/li>\n<li>DataReader\u4ece\u540d\u79f0\u5c31\u53ef\u770b\u51fa\u6570\u636e\u662f\u53ea\u8bfb\u7684<strong><br \/>\n<\/strong><\/li>\n<li>DataReader\u4e0e SqlCommand\u642d\u914d.DataSet\u4e0eDataAdapter \u7ed3\u5408\u4f7f\u7528.<\/li>\n<\/ul>\n<p>3\uff0cDataSet, DataReader\u6570\u636e\u7684\u8bfb\u53d6<br \/>\n??? (1)<br \/>\n????? DataSet\u5229\u7528DataTable\u8bfb\u53d6<br \/>\n???????? DataTable dt =DataSet1Tables[0];<br \/>\n????????<br \/>\n??????????? foreach (DataRow row in dt.Rows)<br \/>\n??????????? {<br \/>\n??????????????? Console.wirte(row[&#8220;Name&#8221;] );<br \/>\n??????????? }<\/p>\n<p>??? (2)<br \/>\n? ? ?? MySqlDataReader dr = _newsDA.GetData(1, 3, 0);<br \/>\n???????? while (dr.Read()){<br \/>\n<span>? ? ? ? ? ? Console.wirte(<\/span>dr[&#8220;Name&#8221;]);<br \/>\n???????????????????????? \/\/ \u6216\u8005dr[&#8220;0&#8221;], dr.GetInt32(0);\u6307\u5b9a\u7c7b\u578b\u8fd4\u56de<br \/>\n???? }?<br \/>\n???? (3)<br \/>\n? ? ?? DataReader\u4e5f\u53ef\u7528DataTable\u8bfb\u53d6<br \/>\n???? ? DataTable dt = new DataTable();<br \/>\n?????? dt.Load( DataReader1 );<br \/>\n???? load:\u7528DataReader\u6570\u636e\u6e90\u7684\u503c\u586b\u5145 DataTable\u3002\u5982\u679c <span>DataTable<\/span> \u5df2\u7ecf\u5305\u542b\u884c\uff0c\u5219\u4ece\u6570\u636e\u6e90\u4f20\u5165\u7684\u6570\u636e\u5c06\u4e0e\u73b0\u6709\u7684\u884c\u5408\u5e76\u3002<\/p>\n<p>4, DataTable \u4e0e DataView<br \/>\n\u5229\u7528DataView\u53ef\u5bf9\u6570\u636e\u8fdb\u884c\u6392\u5e8f\uff0c\u7b5b\u9009\uff0c\u5e76\u4fdd\u5b58\u7ed3\u679c\u89c6\u56fe\u3002<br \/>\n?DataView DV = dt.DefaultView;<br \/>\n?DV.Sort = &#8220;department, amount desc&#8221;;<\/p>\n<p>5\uff0c GridView \u7684DataSource \u53ef\u4ee5\u662fDataSet, DataReader, DataTable, DataView<\/p>\n","protected":false},"excerpt":{"rendered":"<p>DataAdapter:? \u83b7\u53d6\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e DataSet, SqlDateReader, DataTab [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35],"tags":[],"class_list":["post-362","post","type-post","status-publish","format-standard","hentry","category-aspdotnet"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/posts\/362","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/comments?post=362"}],"version-history":[{"count":0,"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/posts\/362\/revisions"}],"wp:attachment":[{"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/media?parent=362"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/categories?post=362"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/tags?post=362"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}