📄 例10-4.mht
字号:
23450;的方式打开文件</span></p>
<p class=3Da><span lang=3DEN-US><span style=3D'mso-spacerun:yes'> &nbs=
p;
</span>Open "d:\ziliao.dat" For Output As #1</span></p>
<p class=3Da><span lang=3DEN-US><span style=3D'mso-spacerun:yes'> &nbs=
p;
</span>'</span><span style=3D'font-family:SimSun;mso-ascii-font-family:"Tim=
es New Roman";
mso-hansi-font-family:"Times New Roman"'>以改写方&#=
24335;打开指定文件，如ĉ=
24;文件不存在则自动建=
立</span></p>
<p class=3Da><span lang=3DEN-US><span style=3D'mso-spacerun:yes'> </s=
pan>Else</span></p>
<p class=3Da><span lang=3DEN-US><span style=3D'mso-spacerun:yes'> &nbs=
p;
</span>Open "d:\ziliao.dat" For Append As #1<span
style=3D'mso-spacerun:yes'> </span><span style=3D'mso-tab-count:2'>&n=
bsp; </span>'
</span><span style=3D'font-family:SimSun;mso-ascii-font-family:"Times New R=
oman";
mso-hansi-font-family:"Times New Roman"'>以追加方&#=
24335;打开指定文件，同Ç=
78;</span></p>
<p class=3Da><span lang=3DEN-US><span style=3D'mso-spacerun:yes'> </s=
pan>End If</span></p>
<p class=3Da><span lang=3DEN-US><span style=3D'mso-spacerun:yes'> </s=
pan>Write
#1, <span class=3DSpellE>bianhao</span>, <span class=3DSpellE>xingming</spa=
n>, <span
class=3DSpellE>nianling</span></span></p>
<p class=3Da><span lang=3DEN-US><span style=3D'mso-spacerun:yes'> </s=
pan>' </span><span
style=3D'font-family:SimSun;mso-ascii-font-family:"Times New Roman";mso-han=
si-font-family:
"Times New Roman"'>如果将上句的</span><=
span
lang=3DEN-US>Write </span><span style=3D'font-family:SimSun;mso-ascii-font-=
family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>改成=
</span><span
lang=3DEN-US>Print</span><span style=3D'font-family:SimSun;mso-ascii-font-f=
amily:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>如何=
？注意比较一下生成=
5991;件格式的不同。</span></p>
<p class=3Da><span lang=3DEN-US><span style=3D'mso-spacerun:yes'> </s=
pan>Close
#1</span></p>
<p class=3Da><span lang=3DEN-US><span style=3D'mso-spacerun:yes'>
</span>Command3_Click<span style=3D'mso-spacerun:yes'> </=
span><span
style=3D'mso-tab-count:2'> &=
nbsp; </span>'
</span><span style=3D'font-family:SimSun;mso-ascii-font-family:"Times New R=
oman";
mso-hansi-font-family:"Times New Roman"'>数据写入&#=
25104;功后调用“清除”按=
;钮的单击事件，清除&#=
29992;户输入的信息</span></p>
<p class=3Da><b><span lang=3DEN-US>End Sub<o:p></o:p></span></b></p>
<p class=3Da><b><span lang=3DEN-US>Private Sub Command2_<span class=3DGramE=
>Click()</span><o:p></o:p></span></b></p>
<p class=3Da><span lang=3DEN-US><span style=3D'mso-spacerun:yes'> </s=
pan>If
Text1 =3D "" And Text2 =3D "" Then<span
style=3D'mso-spacerun:yes'> </span>' </span><span style=3D'font-famil=
y:SimSun;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Ro=
man"'>若用户没有输入“ವ=
4;号”也没有输入“姓=
1517;”，则显示提示信息=
;</span></p>
<p class=3Da><span lang=3DEN-US><span style=3D'mso-spacerun:yes'> &nbs=
p;
</span><span class=3DSpellE>MsgBox</span> "</span><span style=3D'font-=
family:
SimSun;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times=
New Roman"'>你必需输入所需௚=
0;资料！</span><span
lang=3DEN-US>", 48, "</span><span style=3D'font-family:SimSun;mso=
-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>注意=
！</span><span
lang=3DEN-US>"</span></p>
<p class=3Da><span lang=3DEN-US><span style=3D'mso-spacerun:yes'> &nbs=
p;
</span>Text1.SetFocus</span></p>
<p class=3Da><span lang=3DEN-US><span style=3D'mso-spacerun:yes'> &nbs=
p;
</span>Exit Sub</span></p>
<p class=3Da><span lang=3DEN-US><span style=3D'mso-spacerun:yes'> </s=
pan>End If</span></p>
<p class=3Da><span lang=3DEN-US><span style=3D'mso-spacerun:yes'> </s=
pan>On
Error <span class=3DSpellE>GoTo</span> <span class=3DSpellE>aaa</span><span
style=3D'mso-spacerun:yes'> </span><span
style=3D'mso-tab-count:1'> </span>' </span><span style=3D'font-=
family:
SimSun;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times=
New Roman"'>程序出错时（文ߥ=
4;不存在时）在转到行&=
#26631;号为</span><span
class=3DSpellE><span lang=3DEN-US>aaa</span></span><span style=3D'font-fami=
ly:SimSun;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Ro=
man"'>的地方继续执行</span></p>
<p class=3Da><span lang=3DEN-US><span style=3D'mso-spacerun:yes'> </s=
pan>Open
"d:\ziliao.dat" For Input As #1</span></p>
<p class=3Da><span lang=3DEN-US><span style=3D'mso-spacerun:yes'> </s=
pan>'<span
style=3D'mso-spacerun:yes'> </span></span><span style=3D'font-family:=
SimSun;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Ro=
man"'>此时指定文件必须ą=
59;存在的，这一点与</span><=
span
lang=3DEN-US>Output</span><span style=3D'font-family:SimSun;mso-ascii-font-=
family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>或</span><=
span
lang=3DEN-US>Append</span><span style=3D'font-family:SimSun;mso-ascii-font-=
family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>方法=
不同</span></p>
<p class=3Da><span lang=3DEN-US><span style=3D'mso-spacerun:yes'> </s=
pan>Do
Until EOF(1)<span style=3D'mso-spacerun:yes'> </spa=
n><span
style=3D'mso-tab-count:1'> </span>' EOF=
</span><span
style=3D'font-family:SimSun;mso-ascii-font-family:"Times New Roman";mso-han=
si-font-family:
"Times New Roman"'>函数用来判断是=
否到达了文件尾，本=
5821;句判断</span><span
lang=3DEN-US>1</span><span style=3D'font-family:SimSun;mso-ascii-font-famil=
y:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>号文件是&#=
21542;到文件尾</span></p>
<p class=3Da><span lang=3DEN-US><span style=3D'mso-spacerun:yes'> &nbs=
p;
</span>Input #1, <span class=3DSpellE>bianhao</span>, <span class=3DSpellE>=
xingming</span>,
<span class=3DSpellE>nianling</span></span></p>
<p class=3Da><span lang=3DEN-US><span style=3D'mso-spacerun:yes'> &nbs=
p;
</span>If <span class=3DGramE>Trim(</span><span class=3DSpellE>bianhao</spa=
n>) =3D
Trim(Text1) Or Trim(<span class=3DSpellE>xingming</span>) =3D Trim(Text2) T=
hen</span></p>
<p class=3Da><span lang=3DEN-US><span
style=3D'mso-spacerun:yes'> </span>Text1 =3D =
<span
class=3DSpellE>bianhao</span>: Text2 =3D <span class=3DSpellE>xingming</spa=
n>: Text3
=3D <span class=3DSpellE>nianling</span></span></p>
<p class=3Da><span lang=3DEN-US><span
style=3D'mso-spacerun:yes'> </span>If EOF(1) =
=3D
False Then<span style=3D'mso-spacerun:yes'> </span><span
style=3D'mso-tab-count:3'> &=
nbsp; &nbs=
p; </span>'
</span><span style=3D'font-family:SimSun;mso-ascii-font-family:"Times New R=
oman";
mso-hansi-font-family:"Times New Roman"'>未遇到文&#=
20214;尾时显示提示信息</spa=
n></p>
<p class=3Da><span lang=3DEN-US><span
style=3D'mso-spacerun:yes'> </spa=
n>a =3D <span
class=3DSpellE>MsgBox</span>("</span><span style=3D'font-family:SimSun;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Ro=
man"'>继续查询吗？</span><span
lang=3DEN-US>", 4 + 48, "</span><span style=3D'font-family:SimSun;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Ro=
man"'>注意！</span><span
lang=3DEN-US>")</span></p>
<p class=3Da><span lang=3DEN-US><span
style=3D'mso-spacerun:yes'> </spa=
n>If a
=3D <span class=3DSpellE>vbNo</span> Then Close #1: Exit Sub</span></p>
<p class=3Da><span lang=3DEN-US><span
style=3D'mso-spacerun:yes'> </span>End If</sp=
an></p>
<p class=3Da><span lang=3DEN-US><span style=3D'mso-spacerun:yes'> &nbs=
p;
</span>End If</span></p>
<p class=3Da><span lang=3DEN-US><span style=3D'mso-spacerun:yes'> </s=
pan><st1:place
w:st=3D"on">Loop</st1:place></span></p>
<p class=3Da><span lang=3DEN-US><span style=3D'mso-spacerun:yes'> </s=
pan><span
class=3DSpellE>MsgBox</span> "</span><span style=3D'font-family:SimSun;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Ro=
man"'>查询结束！</span><span
lang=3DEN-US>", 48, "</span><span style=3D'font-family:SimSun;mso=
-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>注意=
！</span><span
lang=3DEN-US>"<span style=3D'mso-spacerun:yes'>
</span><span style=3D'mso-tab-count:1'> </span>' </span><span
style=3D'font-family:SimSun;mso-ascii-font-family:"Times New Roman";mso-han=
si-font-family:
"Times New Roman"'>遇到文件尾退出=
循环，显示提示信息</s=
pan></p>
<p class=3Da><span lang=3DEN-US><span style=3D'mso-spacerun:yes'> </s=
pan>Close
#1</span></p>
<p class=3Da><span lang=3DEN-US><span style=3D'mso-spacerun:yes'>
</span>Text1.SetFocus</span></p>
<p class=3Da><span lang=3DEN-US><span style=3D'mso-spacerun:yes'> </s=
pan>Exit
Sub<span style=3D'mso-spacerun:yes'> </=
span><span
style=3D'mso-tab-count:1'> </span>' </s=
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