{"id":687,"date":"2006-04-28T14:31:45","date_gmt":"2006-04-28T14:31:45","guid":{"rendered":"http:\/\/ellery.no-ip.info\/wp\/thinkingmore\/2006\/04\/28\/%e8%b3%87%e6%96%99%e7%b9%ab%e7%b5%90%e8%88%87%e5%b7%a1%e8%a6%bd\/"},"modified":"2006-04-28T14:31:45","modified_gmt":"2006-04-28T14:31:45","slug":"%e8%b3%87%e6%96%99%e7%b9%ab%e7%b5%90%e8%88%87%e5%b7%a1%e8%a6%bd","status":"publish","type":"post","link":"https:\/\/ellery.no-ip.info\/wp\/thinkingmore\/2006\/04\/%e8%b3%87%e6%96%99%e7%b9%ab%e7%b5%90%e8%88%87%e5%b7%a1%e8%a6%bd\/","title":{"rendered":"\u8cc7\u6599\u7e6b\u7d50\u8207\u5de1\u89bd"},"content":{"rendered":"<p>\u8cc7\u6599\u7684\u7e6b\u7d50\u57fa\u672c\u4e0a\u90fd\u662f\u9760 Controls.DataBindings\uff0c\u6240\u4ee5<\/p>\n<blockquote><p>text1.DataBindings.Add( new Binding(&#8220;Text&#8221;, ds, &#8220;customers.custNo&#8221;) );<\/p><\/blockquote>\n<p>\u5c31\u53ef\u4ee5\u628a text1 \u9019\u500b\u63a7\u5236\u9805\u7684 Text \u5c6c\u6027\u7e6b\u7d50\u5230 ds.Tables[&#8220;customers&#8221;] \u7684 custNo \u6b04\u4f4d\u4e0a\u3002<br \/>\n\u5982\u679c\u60f3\u8981\u6709\u4e00\u4e9b\u8655\u7406\u8207\u8b8a\u5316\uff0c\u90a3\u9ebc\u53ef\u4ee5\u900f\u904e Binding.Format \u8207 Binding.Parse\uff1a<\/p>\n<blockquote><p>Binding b=new Binding(&#8220;Text&#8221;, ds, &#8220;customers.custOrder.OrderAmount&#8221;);<br \/>\nb.Parse+=new ConvertEventHandler( currencyStringToDecimal); \/\/ currencyStringToDecimal \u662f\u81ea\u8a02\u7684<br \/>\nb.Format+=new ConvertEventHandler( DecimalToCurrencyString ); \/\/ DecimalToCurrencyString \u4e5f\u662f&#8230;<br \/>\ntext3.DataBindings.Add(b);\n<\/p><\/blockquote>\n<p>\u9019\u8868\u793a\u5728\u8f49\u63db\u63a7\u5236\u9805\u5c6c\u6027\u5230\u8cc7\u6599\u4f86\u6e90\u7684\u6642\u5019\uff0c\u6703\u900f\u904e\u9019\u5169\u500b\u4e8b\u4ef6\u4f5c\u8b8a\u5316\u3002<br \/>\nParse \u8868\u793a\u63a7\u5236\u9805\u5230\u8cc7\u6599\u4f86\u6e90\uff0c\u800c Format \u6b63\u597d\u76f8\u53cd\u3002<br \/>\n\u90fd\u7e6b\u7d50\u4e0a\u4e86\u4ee5\u5f8c\u5462\uff1f\u6211\u5011\u53ef\u4ee5\u900f\u904e BindingManagerBase \u4f86\u4f5c\u5de1\u89bd\u3002<\/p>\n<blockquote><p>BinderManagerBase bm = BindingContext[ dataset, &#8220;tablename&#8221; ];<\/p><\/blockquote>\n<p>\u6b64\u6642\u53ef\u7528 bm.Position \u53d6\u5f97\u4f4d\u7f6e\uff0cbm.Current \u53d6\u5f97\u7576\u524d\u7684\u7269\u4ef6(\u5982\u679c\u8cc7\u6599\u4f86\u6e90\u662f datatable\uff0c\u90a3\u5c31\u662f DataRowView\uff1b\u82e5\u662f\u9663\u5217\uff0c\u90a3\u5c31\u662f\u6240\u6307\u5411\u7684\u5143\u7d20)<br \/>\nbm.Position+1 \u5c31\u662f\u4e0b\u4e00\u7b46\uff0c\u53cd\u4e4b\u5247\u662f\u4e0a\u4e00\u7b46\u3002\u5230\u4e86\u6700\u5f8c\u4e00\u7b46\u7684\u6642\u5019\uff0cbm.Position+1 \u4ee5\u5f8c\u4ecd\u7136\u6703\u662f\u4e00\u6a23\u3002<br \/>\n\u90a3\u9ebc\uff0c\u4f4d\u7f6e\u79fb\u52d5\u7684\u6642\u5019\u6703\u89f8\u767c\u751a\u9ebc\u4e8b\u4ef6\uff1fPositionChanged\u3002\u6240\u4ee5\u6211\u5011\u53ef\u4ee5\u64b0\u5beb\u81ea\u5df1\u7684\u8655\u7406\u4e8b\u4ef6\uff0c<\/p>\n<blockquote><p>PositionChanged+=new EventHandler( this.fmMain_PositionChanged )<\/p><\/blockquote>\n<p>\u4e0d\u50c5\u50c5\u662f TextBox \u53ef\u4ee5\u4f5c\uff0c\u53ea\u8981\u6709\u63d0\u4f9b DataBindings \u5c6c\u6027\u7684\u63a7\u5236\u9805\u90fd\u53ef\u4ee5\u3002<br \/>\n\u628a Button \u7684 Text \u5c6c\u6027 Bind \u5230\u67d0\u8cc7\u6599\u4f86\u6e90\u7684\u67d0\u6b04\uff0c\u800c Enable \u5c6c\u6027\u53c8 Bind \u5230 \u67d0\u6b04\u6642\uff0c\u90a3\u9ebc\u7576\u79fb\u52d5\u8cc7\u6599\u4f86\u6e90\u4f4d\u7f6e\u7684\u6642\u5019\uff0c\u5c31\u53ef\u4ee5\u8b93 Button \u7684\u76f8\u95dc\u72c0\u614b\u81ea\u52d5\u6539\u8b8a\u4e86\u3002<br \/>\n\u9019\u8b93\u6211\u60f3\u5230\u4f3c\u4e4e\u53ef\u4ee5\u4f5c\u4e00\u4e9b state machine \u7684\u6771\u897f&#8230;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8cc7\u6599\u7684\u7e6b\u7d50\u57fa\u672c\u4e0a\u90fd\u662f\u9760 Controls.DataBindings\uff0c\u6240\u4ee5 text1.DataBindings.Add( new Binding(&#8220;Text&#8221;, ds, &#8220;customers.custNo&#8221;) ); \u5c31\u53ef\u4ee5\u628a text1 \u9019\u500b\u63a7\u5236\u9805\u7684 Text \u5c6c\u6027\u7e6b\u7d50\u5230 ds.Tables[&#8220;customers&#8221;] \u7684 custNo \u6b04\u4f4d\u4e0a\u3002 \u5982\u679c\u60f3\u8981\u6709\u4e00\u4e9b\u8655\u7406\u8207\u8b8a\u5316\uff0c\u90a3\u9ebc\u53ef\u4ee5\u900f\u904e Binding.Format \u8207 Binding.Parse\uff1a Binding b=new Binding(&#8220;Text&#8221;, ds, &#8220;customers.custOrder.OrderAmount&#8221;); b.Parse+=new ConvertEventHandler( currencyStringToDecimal); \/\/ currencyStringToDecimal \u662f\u81ea\u8a02\u7684 b.Format+=new ConvertEventHandler( DecimalToCurrencyString ); \/\/ DecimalToCurrencyString \u4e5f\u662f&#8230; text3.DataBindings.Add(b); \u9019\u8868\u793a\u5728\u8f49\u63db\u63a7\u5236\u9805\u5c6c\u6027\u5230\u8cc7\u6599\u4f86\u6e90\u7684\u6642\u5019\uff0c\u6703\u900f\u904e\u9019\u5169\u500b\u4e8b\u4ef6\u4f5c\u8b8a\u5316\u3002 Parse \u8868\u793a\u63a7\u5236\u9805\u5230\u8cc7\u6599\u4f86\u6e90\uff0c\u800c Format \u6b63\u597d\u76f8\u53cd\u3002 \u90fd\u7e6b\u7d50\u4e0a\u4e86\u4ee5\u5f8c\u5462\uff1f\u6211\u5011\u53ef\u4ee5\u900f\u904e BindingManagerBase \u4f86\u4f5c\u5de1\u89bd\u3002 BinderManagerBase bm = BindingContext[ dataset, &#8220;tablename&#8221; ]; &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/ellery.no-ip.info\/wp\/thinkingmore\/2006\/04\/%e8%b3%87%e6%96%99%e7%b9%ab%e7%b5%90%e8%88%87%e5%b7%a1%e8%a6%bd\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;\u8cc7\u6599\u7e6b\u7d50\u8207\u5de1\u89bd&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[6],"tags":[],"class_list":["post-687","post","type-post","status-publish","format-standard","hentry","category-net"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p2MOxp-b5","_links":{"self":[{"href":"https:\/\/ellery.no-ip.info\/wp\/thinkingmore\/wp-json\/wp\/v2\/posts\/687","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ellery.no-ip.info\/wp\/thinkingmore\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ellery.no-ip.info\/wp\/thinkingmore\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ellery.no-ip.info\/wp\/thinkingmore\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ellery.no-ip.info\/wp\/thinkingmore\/wp-json\/wp\/v2\/comments?post=687"}],"version-history":[{"count":0,"href":"https:\/\/ellery.no-ip.info\/wp\/thinkingmore\/wp-json\/wp\/v2\/posts\/687\/revisions"}],"wp:attachment":[{"href":"https:\/\/ellery.no-ip.info\/wp\/thinkingmore\/wp-json\/wp\/v2\/media?parent=687"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ellery.no-ip.info\/wp\/thinkingmore\/wp-json\/wp\/v2\/categories?post=687"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ellery.no-ip.info\/wp\/thinkingmore\/wp-json\/wp\/v2\/tags?post=687"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}