📄 常见问题解决办法.htm
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<body lang=ZH-CN style='tab-interval:21.25pt;text-justify-trim:punctuation'>
<div class=Section1 style='layout-grid:15.6pt'>
<h1><span style='font-family:方正小标宋简体;mso-ascii-font-family:"Times New Roman"'>常见问题解决办法</span></h1>
<p class=7><![if !supportLists]><span lang=EN-US style='font-family:Wingdings;
mso-fareast-font-family:Wingdings;mso-bidi-font-family:Wingdings'><span
style='mso-list:Ignore'>Ø<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>错误提示：系统提示如图</span><span
lang=EN-US>1</span><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>所示。</span></p>
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<p class=a5><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>图</span><span lang=EN-US>1 </span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>程序找不到数据库</span></p>
<p class=7><![if !supportLists]><span lang=EN-US style='font-family:Wingdings;
mso-fareast-font-family:Wingdings;mso-bidi-font-family:Wingdings'><span
style='mso-list:Ignore'>Ø<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>错误原因：</span><span
lang=EN-US>SQL Server</span><span style='font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>数据库未启动，或者本章实例所附带的数据库没有附加正确。</span></p>
<p class=7><![if !supportLists]><span lang=EN-US style='font-family:Wingdings;
mso-fareast-font-family:Wingdings;mso-bidi-font-family:Wingdings'><span
style='mso-list:Ignore'>Ø<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>解决办法：确认</span><span
lang=EN-US>SQL server</span><span style='font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>数据库是否已经启动，如果已经启动，则查看是否有名称为</span><span
lang=EN-US>workflow</span><span style='font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>的数据库存在，如果也以及存在，则检查</span><span
lang=EN-US>MainForm</span><span style='font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>中：</span></p>
<p class=a8><span lang=EN-US style='color:blue;mso-font-kerning:0pt'>public</span><span
lang=EN-US style='mso-font-kerning:0pt'> <span style='color:blue'>static</span>
SqlConnection getConnection()<o:p></o:p></span></p>
<p class=a8><span lang=EN-US style='mso-font-kerning:0pt'><span
style='mso-tab-count:2'> </span>{<o:p></o:p></span></p>
<p class=a8><span lang=EN-US style='mso-font-kerning:0pt'><span
style='mso-tab-count:3'> </span><span
style='color:blue'>try<o:p></o:p></span></span></p>
<p class=a8><span lang=EN-US style='mso-font-kerning:0pt'><span
style='mso-tab-count:3'> </span>{<o:p></o:p></span></p>
<p class=a8><span lang=EN-US style='mso-font-kerning:0pt'><span
style='mso-tab-count:4'> </span>{<span
style='mso-tab-count:5'> </span><o:p></o:p></span></p>
<p class=a8><span lang=EN-US style='mso-font-kerning:0pt'><span
style='mso-tab-count:5'> </span><span
style='color:blue'>string</span> strConnection="user
id=sa;password=;";<o:p></o:p></span></p>
<p class=a8><span lang=EN-US style='mso-font-kerning:0pt'><span
style='mso-tab-count:5'> </span>strConnection+="initial
catalog=workflow;Server=(local);";<span style='mso-tab-count:1'> </span><o:p></o:p></span></p>
<p class=a8><span lang=EN-US style='mso-font-kerning:0pt'><span
style='mso-tab-count:5'> </span><span
style='color:green'>//initial catalog=workflow </span></span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";color:green;mso-font-kerning:0pt'>指定数据库名称为</span><span
lang=EN-US style='color:green;mso-font-kerning:0pt'>workflow<o:p></o:p></span></p>
<p class=a8><span lang=EN-US style='mso-font-kerning:0pt'><span
style='mso-tab-count:5'> </span><span
style='color:green'>//Server=(local) </span></span><span style='font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";
color:green;mso-font-kerning:0pt'>指定数据库所在机器为本机</span><span lang=EN-US
style='color:green;mso-font-kerning:0pt'><o:p></o:p></span></p>
<p class=a8><span lang=EN-US style='mso-font-kerning:0pt'><span
style='mso-spacerun:yes'>
</span>conn=<span style='color:blue'>new</span> SqlConnection(strConnection);<o:p></o:p></span></p>
<p class=a8><span lang=EN-US style='mso-font-kerning:0pt'><span
style='mso-spacerun:yes'>
</span>conn.Open();<span style='mso-tab-count:5'> </span><o:p></o:p></span></p>
<p class=a8><span lang=EN-US style='mso-font-kerning:0pt'><span
style='mso-tab-count:4'> </span>}<o:p></o:p></span></p>
<p class=a8><span lang=EN-US style='mso-font-kerning:0pt'><span
style='mso-tab-count:4'> </span><span
style='color:blue'>return</span> conn;<o:p></o:p></span></p>
<p class=a8><span lang=EN-US style='mso-font-kerning:0pt'><span
style='mso-tab-count:3'> </span>}<o:p></o:p></span></p>
<p class=a8><span lang=EN-US style='mso-font-kerning:0pt'><span
style='mso-tab-count:3'> </span><span
style='color:blue'>catch</span>(Exception ex)<o:p></o:p></span></p>
<p class=a8><span lang=EN-US style='mso-font-kerning:0pt'><span
style='mso-tab-count:3'> </span>{<o:p></o:p></span></p>
<p class=a8><span lang=EN-US style='mso-font-kerning:0pt'><span
style='mso-tab-count:4'> </span>MessageBox.Show(ex.ToString());<o:p></o:p></span></p>
<p class=a8><span lang=EN-US style='mso-font-kerning:0pt'><span
style='mso-tab-count:4'> </span><span
style='color:blue'>return</span> <span style='color:blue'>null</span>;<o:p></o:p></span></p>
<p class=a8><span lang=EN-US style='mso-font-kerning:0pt'><span
style='mso-tab-count:3'> </span>}<o:p></o:p></span></p>
<p class=a8><span lang=EN-US style='mso-font-kerning:0pt'><span
style='mso-tab-count:2'> </span>}</span></p>
<p class=a8><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>确认读者的数据库中存在用户名为</span><span
lang=EN-US>sa </span><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>密码为空的用户，如果</span><span lang=EN-US>sa</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>用户存在密码，或者需要另外指定用户，请修改</span><span lang=EN-US>MainForm</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>中，上面这段代码的</span><span lang=EN-US style='color:blue;
mso-font-kerning:0pt'>string</span><span lang=EN-US style='mso-font-kerning:
0pt'> strConnection="user id=sa;password=;";<o:p></o:p></span></p>
<p class=7 style='mso-list:none;tab-stops:21.25pt'><span lang=EN-US><o:p> </o:p></span></p>
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