<!-- p, td { line-height: 1.3; } p { padding-bottom: 1em; } a { color: #3697b3; font-weight: bold; text-decoration: none; } a:hover { color: #000; text-decoration: underline; } a:active { color: #000; text-decoration: underline; } --> <div style="font-size:12px;color:#262626;line-height:1.3;font-family:Arial, Helvetica, sans-serif;background-color:#fff;"> <div class="ennote"> 當我們需要的數字格式為 0001, 0002... <div>如何使 1, 2 前面自動補零</div> <div></div> <div>使用 String.PadLeft 即可達成</div> <div></div> <div>使用方法</div> <div>string.<span style="color: #2d4fc9;">PadLeft</span>(<span style="color: #de5700;">[len]</span>, <span style="color: #de5700;">[char]</span>)</div> <div></div> <div>使用範例</div> <div><span style="font-family: 細明體; color: #0000ff; font-size: xx-small;"><span style="font-size:9pt">string</span></span> <span style="font-family: 細明體; color: #010101; font-size: xx-small;"><span style="font-size:9pt">str =</span></span> <span style="font-family: 細明體; color: #a31515; font-size: xx-small;"><span style="font-size:9pt">"1"</span></span><span style="font-family: 細明體; color: #010101; font-size: xx-small;"><span style="font-size:9pt">;</span></span></div> <div><span style="font-family: 細明體; color: #010101; font-size: xx-small;"><span style="font-size:9pt">str = str.PadLeft(4,</span></span> <span style="font-family: 細明體; color: #a31515; font-size: xx-small;"><span style="font-size:9pt">'0'</span></span><span style="font-family: 細明體; color: #010101; font-size: xx-small;"><span style="font-size:9pt">);</span></span></div> <div><span style="color: #010101;"><br /></span></div> <div style="font-size: 14px;"><span style="color: #010101;"><span style="font-size: 13px;">以上 可得到 "0004"</span></span></div> </div> </div>