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<p class="MsoNormal">How i can make a textbox only accept alphabetic characters?</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">In VB.Net, i do this:</p>
<p class="MsoNormal"><o:p> </o:p></p>
<pre style="vertical-align:baseline"><span class="hljs-keyword"><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm">Private</span></span><code><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm"> </span></code><span class="hljs-keyword"><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm">Sub</span></span><code><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm"> TextBox1_KeyPress(sender </span></code><span class="hljs-keyword"><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm">As</span></span><code><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm"> </span></code><span class="hljs-type"><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm">Object</span></span><code><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm">, e </span></code><span class="hljs-keyword"><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm">As</span></span><code><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm"> KeyPressEventArgs) _</span></code><span class="hljs-keyword"><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm">Handles</span></span><code><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm"> txtName.KeyPress<o:p></o:p></span></code></pre>
<pre style="vertical-align:baseline"><code><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm"> </span></code><span class="hljs-keyword"><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm">If</span></span><code><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm"> </span></code><span class="hljs-builtin"><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm">Not</span></span><code><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm"> (Asc(e.KeyChar) = </span></code><span class="hljs-number"><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm">8</span></span><code><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm">) </span></code><span class="hljs-keyword"><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm">Then</span></span><code><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm"><o:p></o:p></span></code></pre>
<pre style="vertical-align:baseline"><code><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm"> </span></code><span class="hljs-keyword"><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm">Dim</span></span><code><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm"> allowedChars </span></code><span class="hljs-keyword"><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm">As</span></span><code><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm"> </span></code><span class="hljs-type"><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm">String</span></span><code><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm"> = </span></code><span class="hljs-string"><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm">"abcdefghijklmnopqrstuvwxyz0123456789"</span></span><code><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm"><o:p></o:p></span></code></pre>
<pre style="vertical-align:baseline"><code><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm"> </span></code><span class="hljs-keyword"><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm">If</span></span><code><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm"> </span></code><span class="hljs-builtin"><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm">Not</span></span><code><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm"> allowedChars.Contains(e.KeyChar.ToString.ToLower) </span></code><span class="hljs-keyword"><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm">Then</span></span><code><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm"><o:p></o:p></span></code></pre>
<pre style="vertical-align:baseline"><code><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm"> e.KeyChar = ChrW(</span></code><span class="hljs-number"><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm">0</span></span><code><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm">)<o:p></o:p></span></code></pre>
<pre style="vertical-align:baseline"><code><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm"> e.Handled = </span></code><span class="hljs-literal"><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm">True</span></span><code><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm"><o:p></o:p></span></code></pre>
<pre style="vertical-align:baseline"><code><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm"> </span></code><span class="hljs-keyword"><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm">End</span></span><code><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm"> </span></code><span class="hljs-keyword"><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm">If</span></span><code><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm"><o:p></o:p></span></code></pre>
<pre style="vertical-align:baseline"><code><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm"> </span></code><span class="hljs-keyword"><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm">End</span></span><code><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm"> </span></code><span class="hljs-keyword"><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm">If</span></span><code><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm"><o:p></o:p></span></code></pre>
<pre style="vertical-align:baseline"><code><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm"><o:p> </o:p></span></code></pre>
<pre style="vertical-align:baseline"><span class="hljs-keyword"><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm">End</span></span><code><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm"> </span></code><span class="hljs-keyword"><span style="font-family:"inherit",serif;border:none windowtext 1.0pt;padding:0cm">Su</span></span><span style="font-family:Consolas"><o:p></o:p></span></pre>
<p class="MsoNormal"><o:p> </o:p></p>
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