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22.1.1 显示列表数据
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C#高级编程（第3版）
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22.1.1 显示列表数据
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2006-10-13 14:41:00
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<div style='float:left;width:49%'>·<a href='100165618.htm'>21.9.3 命名约定</a></div><div style='float:right;width:49%'>·<a href='100165619.htm'>21.10 小结</a></div><div style='float:left;width:49%'>·<a href='100165620.htm'>22.1 DataGrid控件</a></div><div style='float:right;width:49%'>·<a href='100165622.htm'>22.1.2 数据源</a></div><div style='float:left;width:49%'>·<a href='100165623.htm'>22.1.3 DataGrid类的层次结构</a></div><div style='float:right;width:49%'>·<a href='100165624.htm'>22.2 数据绑定</a></div></div>
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<link href="css.css" rel="stylesheet" type="text/css" /><h3 style="MARGIN-TOP: 8.15pt; MARGIN-LEFT: 0cm; MARGIN-RIGHT: 0cm; FTEL: 8.15pt"><a ftel="_Toc507815180"><span lang="EN-US">22.1.1 </span></a><span style="FONT-FAMILY: 黑体">显示列表数据</span></h3>
<p class="MsoNormal"><a ftel="tabulardata"><span style="FONT-FAMILY: 宋体">第</span><span lang="EN-US">21</span></a><span style="FONT-FAMILY: 宋体">章介绍了选择数据和把数据放在一个数据表中的各种方式，但仅使用了</span><span lang="EN-US">Console.WriteLine()</span><span style="FONT-FAMILY: 宋体">方法，以非常基本的形式显示数据。</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">第一个示例将说明如何获取一些数据，并在</span><span lang="EN-US">DataGrid</span><span style="FONT-FAMILY: 宋体">控件中显示，为此，建立一个新的应用程序</span><span lang="EN-US">DisplayTabularData</span><span style="FONT-FAMILY: 宋体">，如图</span><span lang="EN-US">22-1</span><span style="FONT-FAMILY: 宋体">所示。</span></p>
<p align="center"><span lang="EN-US"><img height="194" src="22/image001.jpg" width="324" alt="" /></span></p>
<p style="FTEL: 8.15pt" align="center"><span style="FONT-FAMILY: 宋体">图</span><span lang="EN-US"> 22-1</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">这个简单的应用程序从</span><span lang="EN-US">Northwind</span><span style="FONT-FAMILY: 宋体">数据库的</span><span lang="EN-US">customer</span><span style="FONT-FAMILY: 宋体">表中选择每个记录，在</span><span lang="EN-US">DataGrid</span><span style="FONT-FAMILY: 宋体">中把它们显示给用户。其代码如下所示：</span></p>
<p class="2" style="MARGIN-TOP: 8.15pt; MARGIN-LEFT: 21.45pt; MARGIN-RIGHT: 0cm; FTEL: 18.45pt"><span lang="EN-US">using System;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US">using System.Windows.Forms;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US">using System.Data;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US">using System.Data.SqlClient;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> </span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US">public class DisplayTabularData : System.Windows.Forms.Form</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US">{</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> private System.Windows.Forms.Button retrieveButton;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> private System.Windows.Forms.DataGrid dataGrid;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> public DisplayTabularData()</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> {</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> this.ClientSize = new System.Drawing.Size(464, 253);</span></p>
<p class="2" style="MARGIN-TOP: 0cm; MARGIN-LEFT: 21.45pt; MARGIN-RIGHT: 0cm; FTEL: 18.45pt"><span lang="EN-US"> this.Text = "01_DisplayTabularData";</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">代码的起始部分创建主窗口类，为该类定义实例变量，设置窗口的一些属性。接着创建</span><span lang="EN-US">DataGrid</span><span style="FONT-FAMILY: 宋体">网格控件。</span></p>
<p class="2" style="MARGIN-TOP: 8.15pt; MARGIN-LEFT: 21.45pt; MARGIN-RIGHT: 0cm; FTEL: 18.45pt"><span lang="EN-US"> this.dataGrid = new System.Windows.Forms.DataGrid();</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> dataGrid.BeginInit();</span></p>
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