subject_65762.htm

vc

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序号：65762 发表者：菜的嗷嗷直哭 发表日期：2003-12-19 11:55:35
<br>主题：指点
<br>内容：if(m_strName.IsEmpty())<BR>&nbsp;&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;AfxMessageBox(&#34;请输入用户名!&#34;);<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return;<BR>&nbsp;&nbsp;&nbsp;&nbsp;}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; //这几句是什么意思？？？？？？？？？？？？？？？？？<BR>&nbsp;&nbsp;&nbsp;&nbsp;mSqlStr=&#34;SELECT&#34; *FROM CLERK WHERE NAME='&#34;;<BR>&nbsp;&nbsp;&nbsp;&nbsp;mSqlStr=mSqlStr+m_strName<BR>&nbsp;&nbsp;&nbsp;&nbsp;mSqlStr=mSqlStr+&#34;' AND+ PASSWORD='&#34;;<BR>&nbsp;&nbsp;&nbsp;&nbsp;mSqlStr=mSqlStr+m_strPassword<BR>&nbsp;&nbsp;&nbsp;&nbsp;mSqlStr=mSqlStr+&#34;'&#34;
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回复者：就是不相信 回复日期：2003-12-19 12:05:15
<br>内容：如果m_strName为空，弹出对话框，并返回
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回复者：菜的嗷嗷直哭 回复日期：2003-12-19 12:09:16
<br>内容：谢谢！我是说下面几句。
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<font color=red>答案被接受</font><br>回复者：freeaward 回复日期：2003-12-19 12:12:29
<br>内容：&nbsp;&nbsp;mSqlStr=&#34;SELECT&#34; *FROM CLERK WHERE NAME='&#34;;<BR>&nbsp;&nbsp;&nbsp;&nbsp;mSqlStr=mSqlStr+m_strName<BR>&nbsp;&nbsp;&nbsp;&nbsp;mSqlStr=mSqlStr+&#34;' AND+ PASSWORD='&#34;;<BR>&nbsp;&nbsp;&nbsp;&nbsp;mSqlStr=mSqlStr+m_strPassword<BR>&nbsp;&nbsp;&nbsp;&nbsp;mSqlStr=mSqlStr+&#34;'&#34; <BR>这是一句SQL语句，意思是返回在表CLERK中满足条件NAME为m_strName且PASSWORD为m_strPassword的所有记录的全部字段。
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回复者：菜的嗷嗷直哭 回复日期：2003-12-19 12:18:25
<br>内容：谢谢 freeaward!&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;u nice!!!!!!!!!!!!!!!!!!
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