WPF中使用DataGridView创建报表控件
直入主题。报表数据是只作显示用的，直接用DataTable比生成ORM集合快，并且高灵活性。以后要修改报表，只要简单修改一下数据库中的视图。
但是WPF中的DataGrid对于数据稍多时，就会很慢。600行的数据显示要半分钟。通过断点查看，发现其实是DataTable绑定到DataGrid时耗时，数据返回到DataTable是很快的。看来要用以前的DataGridView了。用System.Windows.Forms.DataGridView修改后性能大大提高。600行的数据五，六秒。
报表控件的XAML
xmlns= "http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x= "http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc= "http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d= "http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable= "d"
d:DesignHeight= "300" d:DesignWidth= "600"
xmlns:winform= "clr-namespace:System.Windows.Forms;assembly=System.Windows.Forms">
< Grid Background= "DarkGray">
< Grid.RowDefinitions>
< RowDefinition Height= "34">< /RowDefinition>
< RowDefinition>< /RowDefinition>
< /Grid.RowDefinitions>
< StackPanel Grid.Row= "0" Orientation= "Horizontal">
< TextBlock VerticalAlignment= "Center" Text= "{Binding SearchFieldTitle}" Margin= "5">< /TextBlock>
< TextBox Name= "searchText" Width= "200" Margin= "5">< /TextBox>
< Button Content= "查找" Width= "50" Margin= "5" IsDefault= "True" Click= "Button_Click">< /Button>
< /StackPanel>
< WindowsFormsHost Grid.Row= "1" Name= "windowsFormsHost1" Background= "LightGray" >
< winform:DataGridView Name= "listDataGrid" ReadOnly= "True" AllowDrop= "True"
AllowUserToAddRows= "False" AllowUserToDeleteRows= "False"
Font= "15" RowHeadersWidth= "20" SelectionMode= "FullRowSelect"
ShowEditingIcon= "False" ShowCellToolTips= "False" ShowCellErrors= "False"
ShowRowErrors= "False" AutoSizeColumnsMode= "AllCells" >
< /winform:DataGridView>
< /WindowsFormsHost>
< /Grid>
< /UserControl>
报表控件的C#(ReportControl.xaml.cs)
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Data;
using System.Windows.Forms;
namespace WpfApplication1
{
///
/// BaseReport.xaml 的交互逻辑
///
public partial class ReportControl : System.Windows.Controls.UserControl
{
private System.Windows.Forms.DataGridView listDataGrid;
public string ViewName { get; set; }
public string ViewOrder { get; set; }
public string SearchFieldName { get; set; }
public string SearchFieldTitle { get; set; }
public ReportControl()
{
InitializeComponent();
listDataGrid = windowsFormsHost1.Child as System.Windows.Forms.DataGridView;
this.SearchFieldTitle = "";
this.DataContext = this;
}
private void Button_Click(object sender, RoutedEventArgs e)
{
string queryStr = "SELECT * FROM [@TableName] Where @SearchFieldName like '%@SearchFieldValue%' ORDER BY @ViewOrder";
queryStr = queryStr.Replace("@TableName", ViewName);
queryStr = queryStr.Replace("@ViewOrder", ViewOrder);
queryStr = queryStr.Replace("@SearchFieldName", SearchFieldName);
queryStr = queryStr.Replace("@SearchFieldValue", searchText.Text.Trim());
listDataGrid.DataSource = DB.GetDataTable(queryStr);
}
}
}
DB辅助类
using System.Collections.Generic;
using System.Text;
using System.Data.SqlClient;
using System.Data;
namespace WpfApplication1
{
public class DB
{
private static string connectionStr = "";
public static void InitConnectionStr( string conStr)
{
connectionStr = conStr;
}
public static SqlConnection GetNewConnection()
{
return new SqlConnection(connectionStr);
}
public static DataTable GetDataTable( string selectCmdStr)
{
DataTable dt = new DataTable();
SqlDataAdapter adapter= null;
SqlConnection conn= null;
try
{
conn=GetNewConnection();
conn.Open();
adapter = new SqlDataAdapter(selectCmdStr, conn);
adapter.Fill(dt);
}
catch
{
}
finally
{
if (conn != null)
{
conn.Close();
conn.Dispose();
}
if (adapter != null)
{
adapter.Dispose();
}
}
return dt;
}
}
}
调用
1。初始化连接字符串。
DB.InitConnectionStr(@"Data Source=PC2011012718UQF\SQLEXPRESS;Initial Catalog=Northwind;Persist Security Info=True;User ID=dbReader;Password=888888");
2。在要用的XAML中使用ReportControl
<Window x:Class="WpfApplication1.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525" xmlns:my="clr-namespace:WpfApplication1">
<Grid>
<my:ReportControl x:Name="reportControl1"
ViewName="Alphabetical list of products" ViewOrder="ProductID"
SearchFieldName="ProductName" SearchFieldTitle="Product Name:" />
</Grid>
</Window>
本文来自Ivan83的博客，原文地址:http://www.cnblogs.com/Ivan83/archive/2011/08/04/2127860.html