学习下WPF，顺便用WPF把WinForm的程序改成了WPF，功能和MFC版功能基本相同
主要代码：
1 设置DataGrid的Style
<Style x:Key="Body_Content_DataGrid_Centering" TargetType="{x:Type DataGridCell}">
<Style.Triggers>
<Trigger Property="IsSelected" Value="True">
<Setter Property="Background" Value="ForestGreen"/>
</Trigger>
</Style.Triggers>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type DataGridCell}">
<Grid Background="{TemplateBinding Background}">
<ContentPresenter VerticalAlignment="Center" />
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
<Setter Property="FontSize" Value="13" />
</Style> <DataGrid Grid.Row="0" Name="dgHashInfo"
AutoGenerateColumns="False"
HeadersVisibility="All" RowHeaderWidth="18" RowHeight="25"
SelectionMode="Extended"
SelectionUnit="FullRow"
CanUserSortColumns="False"
CanUserResizeRows="False"
CanUserAddRows="False"
AllowDrop="True"
DragEnter="dgHashInfo_DragEnter"
DragOver="dgHashInfo_DragEnter"
Drop="dgHashInfo_Drop"
LoadingRow="dgHashInfo_LoadingRow"
CellStyle="{StaticResource Body_Content_DataGrid_Centering}"
ItemsSource="{Binding}" >
<DataGrid.RowStyle>
<Style TargetType="DataGridRow">
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" Value="DeepSkyBlue" />
<Setter Property="Foreground" Value="White" />
</Trigger>
</Style.Triggers>
</Style>
</DataGrid.RowStyle>
<DataGrid.RowHeaderStyle>
<Style TargetType="DataGridRowHeader">
<Setter Property="FontSize" Value="13"/>
<Setter Property="Width" Value="20"/>
<Setter Property="Background">
<Setter.Value>
<LinearGradientBrush StartPoint="0,0" EndPoint="1,1">
<GradientStop Color="White" Offset="0"/>
<GradientStop Color="SkyBlue" Offset="1"/>
</LinearGradientBrush>
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="ToolTip" Value="Select this row"/>
</Trigger>
</Style.Triggers>
</Style>
</DataGrid.RowHeaderStyle>
<DataGrid.ContextMenu>
<ContextMenu Name="cmRighMenu" StaysOpen="True" >
<MenuItem Name="cmAddNewRow" Header="Add new row" Click="cmAddNewRow_Click" />
</ContextMenu>
</DataGrid.ContextMenu>
<DataGrid.Columns>
<DataGridTextColumn Header="File Attribute" Width="*" Binding="{Binding Attribute, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" IsReadOnly="True" />
<DataGridTextColumn Header="Attribute Value" Width="4*" Binding="{Binding Value, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" />
</DataGrid.Columns>
</DataGrid>2 进度条的控制
private bool InitProgressBar(string filePath)
{
bool result = true;
string key = GenerateNameByHashCode(filePath);
if (htProgressBar.ContainsKey(key))
{
result = false;
Warnning("Wait for this file calculate completely");
}
else
{
ProgressBar pb = new ProgressBar();
pb.IsIndeterminate = false;
pb.Orientation = Orientation.Horizontal;
pb.Width = 100;
pb.Height = sbStatus.ActualHeight - 5;
pb.Minimum = 0;
pb.Maximum = 100;
pb.Value = 0;
pb.Visibility = Visibility.Visible;
sbStatus.Items.Add(pb);
htProgressBar.Add(key, pb);
}
return result;
} private void UpdateHashInfo(FileHashInfo fileHashInfo)
{
MethodInvokerWithOnePara miProgress = new MethodInvokerWithOnePara(ProgressPerformStep);
Dispatcher.Invoke(miProgress, new object[] { fileHashInfo });
if (fileHashInfo.Percent == 100)
{
MethodInvokerWithOnePara miHashInfo = new MethodInvokerWithOnePara(AddFileHashInfo);
Dispatcher.Invoke(miHashInfo, new object[] { fileHashInfo });
}
}
private void ProgressPerformStep(FileHashInfo fileHashInfo)
{
string key = GenerateNameByHashCode(fileHashInfo.Path);
ProgressBar pb = htProgressBar[key] as ProgressBar;
double value = fileHashInfo.Percent;
if ((value == -1) || (value >= pb.Maximum))
{
ClearProgressBar(key);
}
else
{
if (value > pb.Value)
{
pb.SetValue(ProgressBar.ValueProperty, value);
}
}
}
private void ClearProgressBar(string key)
{
ProgressBar pb = htProgressBar[key] as ProgressBar;
if (null != pb)
{
sbStatus.Items.Remove(pb);
htProgressBar.Remove(key);
}
}3 Drag-Drop文件功能实现
private void rtbSourceText_PreviewDragEnter(object sender, DragEventArgs e)
{
if (e.Data.GetDataPresent(DataFormats.FileDrop))
{
e.Effects = DragDropEffects.Copy;
e.Handled = true;
}
else
{
e.Effects = DragDropEffects.None;
}
}
private void rtbSourceText_PreviewDrop(object sender, DragEventArgs e)
{
string filePath = ((Array)e.Data.GetData(DataFormats.FileDrop)).GetValue(0).ToString();
if (!File.Exists(filePath))
{
if (Directory.Exists(filePath))
{
Warnning("Does not support directory");
}
else
{
Warnning("File not find");
}
return;
}
else
{
FileInfo fi = new FileInfo(filePath);
if (fi.Extension != ".txt")
{
Warnning("Only support text file");
return;
}
}
StreamReader sr = new StreamReader(filePath);
string content = sr.ReadToEnd();
rtbSourceText.AppendText(content);
}4 计算MD5/SHA1
public void GetFileHashInfo(string path, CalculateProgressHandle progress)
{
fileHashInfo = new FileHashInfo();
bStopCalc = false;
fileHashInfo.Path = path;
fileHashInfo.Size = GetFileSize(path);
fileHashInfo.LastModifyTime = GetFileTime(path);
ChangeProgress = progress;
AsyncGetHashValue(path);
}
private void AsyncGetHashValue(string path)
{
try
{
int bufferSize = 1024 * 1024 * 10; //10M
buffer = new byte[bufferSize];
//open file stream
inputStream = File.Open(path, FileMode.Open, FileAccess.Read, FileShare.Read);
hashAlgorithm_MD5 = new MD5CryptoServiceProvider();
hashAlgorithm_SHA1 = new SHA1CryptoServiceProvider();
//async read first data into buffer
inputStream.BeginRead(buffer, 0, buffer.Length, new AsyncCallback(AsyncComputeHashCallback), null);
}
catch
{
//
}
}
private void AsyncComputeHashCallback(IAsyncResult result)
{
int bytesRead = inputStream.EndRead(result);
if (inputStream.Length == 0)
{
fileHashInfo.Percent = 100;
}
else
{
fileHashInfo.Percent = (int)((double)inputStream.Position / inputStream.Length * 100);
}
if (inputStream.Position < inputStream.Length)
{
if (bStopCalc)
{
fileHashInfo.Percent = -1;
if (null != ChangeProgress)
{
ChangeProgress(fileHashInfo);
}
return;
}
//caculate hash value
var output = new byte[buffer.Length];
hashAlgorithm_MD5.TransformBlock(buffer, 0, buffer.Length, output, 0);
hashAlgorithm_SHA1.TransformBlock(buffer, 0, buffer.Length, output, 0);
//async read next data into buffer
inputStream.BeginRead(buffer, 0, buffer.Length, new AsyncCallback(AsyncComputeHashCallback), null);
}
else
{
//caculate last block hash value
hashAlgorithm_MD5.TransformFinalBlock(buffer, 0, bytesRead);
hashAlgorithm_SHA1.TransformFinalBlock(buffer, 0, bytesRead);
fileHashInfo.MD5 = BitConverter.ToString(hashAlgorithm_MD5.Hash).Replace("-", "");
fileHashInfo.SHA1 = BitConverter.ToString(hashAlgorithm_SHA1.Hash).Replace("-", "");
inputStream.Close();
}
if (null != ChangeProgress)
{
ChangeProgress(fileHashInfo);
}
}
public static void StopCalculate()
{
bStopCalc = true;
}单线程同步计算MD5
private static string GetMD5(string path)
{
string sMD5Value = string.Empty;
Stream file = GetStream(path);
MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
byte[] bMD5 = md5.ComputeHash(file);
sMD5Value = System.BitConverter.ToString(bMD5);
sMD5Value = sMD5Value.Replace("-", "");
return sMD5Value;
}如果完全转载，请注明出处，谢谢
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