DataGridView 密码列（显示为*号）的设置 | LongSheng

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DataGridView 密码列（显示为*号）的设置

DataGridView 密码列（显示为*号）的设置

代码

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<div><span style="color: #008080"> 1</span> <span style="color: #000000"> </span><span style="color: #808080">///</span><span style="color: #008000"> </span><span style="color: #808080"><summary></span><span style="color: #008000"><br /></span><span style="color: #008080"> 2</span> <span style="color: #008000"> </span><span style="color: #808080">///</span><span style="color: #008000"> 单元格显示格式事件<br /></span><span style="color: #008080"> 3</span> <span style="color: #008000"> </span><span style="color: #808080">///</span><span style="color: #008000"> </span><span style="color: #808080"></summary></span><span style="color: #008000"><br /></span><span style="color: #008080"> 4</span> <span style="color: #008000"> </span><span style="color: #808080">///</span><span style="color: #008000"> </span><span style="color: #808080"><param name="sender"></param></span><span style="color: #008000"><br /></span><span style="color: #008080"> 5</span> <span style="color: #008000"> </span><span style="color: #808080">///</span><span style="color: #008000"> </span><span style="color: #808080"><param name="e"></param></span><span style="color: #808080"><br /></span><span style="color: #008080"> 6</span> <span style="color: #808080"> </span><span style="color: #000000"> </span><span style="color: #0000ff">private</span><span style="color: #000000"> </span><span style="color: #0000ff">void</span><span style="color: #000000"> dataGridView1_CellFormatting(</span><span style="color: #0000ff">object</span><span style="color: #000000"> sender, DataGridViewCellFormattingEventArgs e)<br /></span><span style="color: #008080"> 7</span> <span style="color: #000000"> {<br /></span><span style="color: #008080"> 8</span> <span style="color: #000000"> </span><span style="color: #008000">//</span><span style="color: #008000"> 把第4列显示*号，*号的个数和实际数据的长度相同</span><span style="color: #008000"><br /></span><span style="color: #008080"> 9</span> <span style="color: #000000"> </span><span style="color: #0000ff">if</span><span style="color: #000000"> (e.ColumnIndex </span><span style="color: #000000">==</span><span style="color: #000000"> </span><span style="color: #800080">3</span><span style="color: #000000">)<br /></span><span style="color: #008080">10</span> <span style="color: #000000"> {<br /></span><span style="color: #008080">11</span> <span style="color: #000000"> </span><span style="color: #0000ff">if</span><span style="color: #000000"> (e.Value </span><span style="color: #000000">!=</span><span style="color: #000000"> </span><span style="color: #0000ff">null</span><span style="color: #000000"> </span><span style="color: #000000">&&</span><span style="color: #000000"> e.Value.ToString().Length </span><span style="color: #000000">></span><span style="color: #000000"> </span><span style="color: #800080">0</span><span style="color: #000000">)<br /></span><span style="color: #008080">12</span> <span style="color: #000000"> {<br /></span><span style="color: #008080">13</span> <span style="color: #000000"> e.Value </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #0000ff">new</span><span style="color: #000000"> </span><span style="color: #0000ff">string</span><span style="color: #000000">(</span><span style="color: #800000">'</span><span style="color: #800000">*</span><span style="color: #800000">'</span><span style="color: #000000">,e.Value.ToString().Length);<br /></span><span style="color: #008080">14</span> <span style="color: #000000"> }<br /></span><span style="color: #008080">15</span> <span style="color: #000000"> }<br /></span><span style="color: #008080">16</span> <span style="color: #000000"> }<br /></span><span style="color: #008080">17</span> <span style="color: #000000"><br /></span><span style="color: #008080">18</span> <span style="color: #000000"> </span><span style="color: #808080">///</span><span style="color: #008000"> </span><span style="color: #808080"><summary></span><span style="color: #008000"><br /></span><span style="color: #008080">19</span> <span style="color: #008000"> </span><span style="color: #808080">///</span><span style="color: #008000"> 编辑单元格控件事件<br /></span><span style="color: #008080">20</span> <span style="color: #008000"> </span><span style="color: #808080">///</span><span style="color: #008000"> </span><span style="color: #808080"></summary></span><span style="color: #008000"><br /></span><span style="color: #008080">21</span> <span style="color: #008000"> </span><span style="color: #808080">///</span><span style="color: #008000"> </span><span style="color: #808080"><param name="sender"></param></span><span style="color: #008000"><br /></span><span style="color: #008080">22</span> <span style="color: #008000"> </span><span style="color: #808080">///</span><span style="color: #008000"> </span><span style="color: #808080"><param name="e"></param></span><span style="color: #808080"><br /></span><span style="color: #008080">23</span> <span style="color: #000000"> </span><span style="color: #0000ff">private</span><span style="color: #000000"> </span><span style="color: #0000ff">void</span><span style="color: #000000"> dataGridView1_EditingControlShowing(</span><span style="color: #0000ff">object</span><span style="color: #000000"> sender, DataGridViewEditingControlShowingEventArgs e)<br /></span><span style="color: #008080">24</span> <span style="color: #000000"> {<br /></span><span style="color: #008080">25</span> <span style="color: #000000"> </span><span style="color: #008000">//</span><span style="color: #008000"> 编辑第4列时，把第4列显示为*号</span><span style="color: #008000"><br /></span><span style="color: #008080">26</span> <span style="color: #000000"> TextBox t </span><span style="color: #000000">=</span><span style="color: #000000"> e.Control </span><span style="color: #0000ff">as</span><span style="color: #000000"> TextBox;<br /></span><span style="color: #008080">27</span> <span style="color: #000000"> </span><span style="color: #0000ff">if</span><span style="color: #000000"> (t </span><span style="color: #000000">!=</span><span style="color: #000000"> </span><span style="color: #0000ff">null</span><span style="color: #000000">)<br /></span><span style="color: #008080">28</span> <span style="color: #000000"> {<br /></span><span style="color: #008080">29</span> <span style="color: #000000"> </span><span style="color: #0000ff">if</span><span style="color: #000000"> (</span><span style="color: #0000ff">this</span><span style="color: #000000">.dataGridView1.CurrentCell.ColumnIndex </span><span style="color: #000000">==</span><span style="color: #000000"> </span><span style="color: #800080">3</span><span style="color: #000000">)<br /></span><span style="color: #008080">30</span> <span style="color: #000000"> t.PasswordChar </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #800000">'</span><span style="color: #800000">*</span><span style="color: #800000">'</span><span style="color: #000000">;<br /></span><span style="color: #008080">31</span> <span style="color: #000000"> </span><span style="color: #0000ff">else</span><span style="color: #000000"><br /></span><span style="color: #008080">32</span> <span style="color: #000000"> t.PasswordChar </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #0000ff">new</span><span style="color: #000000"> </span><span style="color: #0000ff">char</span><span style="color: #000000">();<br /></span><span style="color: #008080">33</span> <span style="color: #000000"> }<br /></span><span style="color: #008080">34</span> <span style="color: #000000"> }</span></div>

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