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<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> dataGrid.Location = new System.Drawing.Point(8, 8);</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> dataGrid.Size = new System.Drawing.Size(448, 208);</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> dataGrid.TabIndex = 0;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> dataGrid.Anchor = AnchorStyles.Bottom | AnchorStyles.Top | </span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> AnchorStyles.Left | AnchorStyles.Right;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> this.Controls.Add(this.dataGrid);</span></p>
<p class="2" style="MARGIN-TOP: 0cm; MARGIN-LEFT: 21.45pt; MARGIN-RIGHT: 0cm; FTEL: 18.45pt"><span lang="EN-US"> dataGrid.EndInit();</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">第二行</span><span lang="EN-US">dataGrid.BeginInit();</span><span style="FONT-FAMILY: 宋体">禁止激发该网格上的事件，在对控件进行大量的修改时，这是很必要的。如果没有禁止该事件，对网格的每次修改都会刷新屏幕。然后设置控件的位置和大<span style="LETTER-SPACING: 0.1pt">小，定义标签索引，把控件固定在窗口的左上角和右下角，便于跟踪主应用程序窗口的对应控</span>件。</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">下面创建按钮。在初始化按钮时，基本步骤是一样的：</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.retrieveButton = new System.Windows.Forms.Button();</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> retrieveButton.Location = new System.Drawing.Point(384, 224);</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> retrieveButton.Size = new System.Drawing.Size(75, 23);</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> retrieveButton.TabIndex = 1;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> retrieveButton.Anchor = AnchorStyles.Bottom | AnchorStyles.Right;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> retrieveButton.Text = "Retrieve";</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> retrieveButton.Click += new System.EventHandler</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> (this.retrieveButton_Click);</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> this.Controls.Add(this.retrieveButton);</span></p>
<p class="2" style="MARGIN-TOP: 0cm; MARGIN-LEFT: 21.45pt; MARGIN-RIGHT: 0cm; FTEL: 18.45pt"><span lang="EN-US"> }</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">按钮会引发</span><span lang="EN-US">Click</span><span style="FONT-FAMILY: 宋体">事件，所以定义该事件的事件处理程序</span><span lang="EN-US">retrieveButton_Click</span><span style="FONT-FAMILY: 宋体">：</span></p>
<p class="2" style="MARGIN-TOP: 8.15pt; MARGIN-LEFT: 21.45pt; MARGIN-RIGHT: 0cm; FTEL: 18.45pt"><span lang="EN-US"> protected void retrieveButton_Click(object sender, System.EventArgs e)</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"> retrieveButton.Enabled = false;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> string source = "server=(local)\\NetSDK;" + </span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> "uid=QSUser;pwd=QSPassword;" + </span></p>
<p class="2" style="MARGIN-TOP: 0cm; MARGIN-LEFT: 21.45pt; MARGIN-RIGHT: 0cm; FTEL: 18.45pt"><span lang="EN-US"> "database=Northwind";</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">在选择了</span><span lang="EN-US">Customers</span><span style="FONT-FAMILY: 宋体">表中的数据填充</span><span lang="EN-US">DataSet</span><span style="FONT-FAMILY: 宋体">后，调用</span><span lang="EN-US">SetDataBinding</span><span style="FONT-FAMILY: 宋体">把</span><span lang="EN-US">DataSet</span><span style="FONT-FAMILY: 宋体">绑定到网格上。这个方法的参数是</span><span lang="EN-US">DataSet</span><span style="FONT-FAMILY: 宋体">和其中要显示的表名。该网格一次只显示一个</span><span lang="EN-US">DataTable</span><span style="FONT-FAMILY: 宋体">中的数据，即使</span><span lang="EN-US">DataSet</span><span style="FONT-FAMILY: 宋体">包含多个表，也是这样。本章将举一个示例，显示带有多个</span><span lang="EN-US">DataTable</span><span style="FONT-FAMILY: 宋体">的</span><span lang="EN-US">DataSet</span><span style="FONT-FAMILY: 宋体">中的数据。当然，</span><span lang="EN-US">DataSet</span><span style="FONT-FAMILY: 宋体">中的数据可以来自于许多实际的数据库表</span><span lang="EN-US">(</span><span style="FONT-FAMILY: 宋体">或者多个表的视图</span><span lang="EN-US">)</span><span style="FONT-FAMILY: 宋体">：</span></p>
<p class="2" style="MARGIN-TOP: 8.15pt; MARGIN-LEFT: 21.45pt; MARGIN-RIGHT: 0cm; FTEL: 18.45pt"><span lang="EN-US"> string select = "SELECT * FROM Customers" ;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> SqlConnection conn = new SqlConnection(source);</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> SqlDataAdapter da = new SqlDataAdapter( select , conn);</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> DataSet ds = new DataSet();</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> da.Fill(ds , "Customers");</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> dataGrid.SetDataBinding(ds , "Customers");</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"> static void Main()</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"> Application.Run(new 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-TOP: 0cm; MARGIN-LEFT: 21.45pt; MARGIN-RIGHT: 0cm; FTEL: 18.45pt"><span lang="EN-US">}</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">要编译该示例，在命令提示符上输入下述命令：</span></p>
<p class="a6" style="MARGIN-TOP: 8.15pt; MARGIN-LEFT: 21.45pt; MARGIN-RIGHT: 0cm; FTEL: 18.45pt"><strong><span lang="EN-US">csc /t:winexe /debug+ /r:System.dll /r:System.Data.dll /r:system.windows.forms.dll </span></strong></p>
<p class="a6" style="MARGIN-TOP: 0cm; MARGIN-LEFT: 21.45pt; MARGIN-RIGHT: 0cm; FTEL: 18.45pt"><strong><span lang="EN-US"> /recurse:*.cs</span></strong></p>
<p class="MsoNormal"><span lang="EN-US">/recurse:*.cs</span><span style="FONT-FAMILY: 宋体">参数会编译当前目录及其子目录下的所有</span><span lang="EN-US">.cs</span><span style="FONT-FAMILY: 宋体">文件，这里使用该参数是为了确保把所有相关的代码文件都包含到可执行文件中。</span></p></div>
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<h1 id="divCurrentNode2" style="color: #b83507; width: 100%; text-align: left; font-size: 12px; padding-left: 2px">当前章节:<a href='100165621.htm'><font color='red'>22.1.1 显示列表数据</font></a></h1>
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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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