SilverLight C#程序之：把二进制数据流转换为文件 并打开文件及exe程序

概述

上节我们了解了 将文件转换为二进制数据流 并保存到数据库中。。。

这节我们来看看 怎么将这些二进制流转换为文件 并打开他。。。

点击查看之后（此数据为保存到数据库中的数据）

SilverLight代码

View Code

<Grid>                                    <Grid.RowDefinitions>                                        <RowDefinition Height="*"></RowDefinition>                                        <RowDefinition Height="30"></RowDefinition>                                    </Grid.RowDefinitions>                                    <sdk:DataGrid x:Name="gridConAttachmentModel" Grid.Row="0" RowHeight="25" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Background="#FEFEFE" HeadersVisibility="Column" BorderThickness="0,1,0,0" GridLinesVisibility="All" AutoGenerateColumns="False" FrozenColumnCount="1" AreRowDetailsFrozen="True"                                                   ItemsSource="{Binding ConAttachmentModelList}" SelectedItem="{Binding ConAttachmentModel}" IsReadOnly="True">                                        <sdk:DataGrid.Columns>                                            <sdk:DataGridTextColumn Header="序号" Binding="{Binding ConAtt_OrderNum,Mode=TwoWay}" IsReadOnly="True" />                                            <sdk:DataGridTextColumn Header="附件名称" Binding="{Binding ConAtt_Name,Mode=TwoWay}" />                                            <sdk:DataGridTextColumn Header="附件资料" Binding="{Binding ConAtt_Name,Mode=TwoWay}">                                            </sdk:DataGridTextColumn>                                            <sdk:DataGridTextColumn Header="操作员编号" Binding="{Binding ConAtt_MakerId,Mode=TwoWay}" IsReadOnly="True" Visibility="Collapsed"></sdk:DataGridTextColumn>                                            <sdk:DataGridTextColumn Header="操作员名称" Binding="{Binding ConAtt_MakerName,Mode=TwoWay}" IsReadOnly="True" />                                            <sdk:DataGridTextColumn Header="备注" Binding="{Binding ConAtt_Remark,Mode=TwoWay}" />                                            <sdk:DataGridTemplateColumn Header="预览" Width="90" >                                                <sdk:DataGridTemplateColumn.CellTemplate>                                                    <DataTemplate>                                                        <HyperlinkButton Content="查看" Margin="5" Click="HyperlinkButton_Click"></HyperlinkButton>                                                    </DataTemplate>                                                </sdk:DataGridTemplateColumn.CellTemplate>                                            </sdk:DataGridTemplateColumn>                                        </sdk:DataGrid.Columns>                                    </sdk:DataGrid>                                    <Button Height="20" Width="80" Margin="5" Content="添加文件" Grid.Row="1" HorizontalAlignment="Left" Command="{Binding UploadCommd}">                                    </Button>                                </Grid>

cs代码

View Code

private void HyperlinkButton_Click(object sender, RoutedEventArgs e)        {//获取当前选择行的实体对象            var conAttachmentModel = gridConAttachmentModel.SelectedItem as ConAttachmentModel;            if (conAttachmentModel != null)            {//如果不为空 把获取到的对象作为参数传入 web端 用来打开文件                RequestService.Sent(ContractManageUriNames.OpenContractFiles, conAttachmentModel,                                delegate(object sent, ResponseArgs args) {  });            }        }//打开文件 public void OpenContractFiles(ConAttachmentModel conAttachmentModel)        {            //获取文件类型            // var filesType = conAttachmentModel.ConAtt_Name.Substring(conAttachmentModel.ConAtt_Name.LastIndexOf("."));            //获取二进制流文件            var filebyte = conAttachmentModel.ConAtt_Files;            //创建的文件路径            var path = @"C:\Documents and Settings\Administrator\Local Settings\Temp\\" + conAttachmentModel.ConAtt_Name;            //按照路径实例化文件            var file = new FileStream(path, FileMode.Create, FileAccess.Write);            //实例化一个用于写的 BinaryWriter            var bw = new BinaryWriter(file);            //将传进来的二进制字符转换为8位无符号整数数组再写进去            bw.Write(filebyte);            bw.Close();   //关闭二进制流写入器            file.Close();  //关闭文件流            //创建Process命令            var cmd = new Process();            //创建要运行的文件或者程序            var startfile = new ProcessStartInfo                         {                             FileName = file.Name,//文件完全路径                             WindowStyle = ProcessWindowStyle.Normal,//Windows窗口样式                             UseShellExecute = true//为true，则用默认的打开方式打开，如果是exe等，设置为false                          };            cmd.StartInfo = startfile;            cmd.Start(); //打开文件        }

大功告成！！！