C# WPF项目实战

Posted 2021-07-05 dotNET编程大全

    好久没写原创了，今天心血来潮，打算写一篇，关于特定的知识点之前写过很多，今天呢就写一篇综合性的偏应用的一个小的项目实战.

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重要的知识点

本篇内容基于CM框架编写，涉及以下知识点：

① CM框架下一个控件附加多个事件：

cal:Message.Attach="[Event MouseRightButtonDown]=[datagrid_MouseRightButtonDown($source,$eventArgs)];[Event LoadingRow]=[DG_LoadingRow($source,$eventArgs)]"

②datagrid添加行号：

DG.LoadingRow += new EventHandler<DataGridRowEventArgs>(DG_LoadingRow);

 public void DG_LoadingRow(object sender, DataGridRowEventArgs e) { e.Row.Header = e.Row.GetIndex() + 1; }

③datagrid右键点击添加菜单：

 public void datagrid_MouseRightButtonDown(object sender, MouseButtonEventArgs e) { dGrid = (System.Windows.Controls.DataGrid)sender; menu1 = new System.Windows.Controls.ContextMenu(); System.Windows.Controls.MenuItem menuitemFunc1 = new System.Windows.Controls.MenuItem(); System.Windows.Controls.MenuItem menuitemFunc2 = new System.Windows.Controls.MenuItem(); System.Windows.Controls.MenuItem menuitemFunc3 = new System.Windows.Controls.MenuItem(); menuitemFunc1.Header = "移动到此位置"; menuitemFunc2.Header = "删除此行信息"; menuitemFunc3.Header = "导出数据"; menuitemFunc1.Click += MoveToPostion_Click; menuitemFunc2.Click += DeleteRow_Click; menuitemFunc3.Click += ExportData_Click; menu1.Items.Add(menuitemFunc1); menu1.Items.Add(menuitemFunc2); menu1.Items.Add(menuitemFunc3); menu1.StaysOpen = true; }

④浏览选择文件路径和浏览选择文件

 public void Load() { //lblStr = "you hit mine! i am lable"; OpenFileDialog openFileDialog1 = new OpenFileDialog(); openFileDialog1.Filter = "图片|*.jpg;*.jpeg;*.bmp;*.png;*.gif"; openFileDialog1.FilterIndex = 1;//当前使用第二个过滤字符串 openFileDialog1.RestoreDirectory = true;//对话框关闭时恢复原目录 openFileDialog1.Multiselect = false; openFileDialog1.Title = "选择文件"; try { if (openFileDialog1.ShowDialog() == DialogResult.OK) { System.Windows.MessageBox.Show("你选择了文件" + openFileDialog1.FileName);
 } } catch (Exception ex) { Console.WriteLine(ex); }
 }

 public void BrowseSavePath() { FolderBrowserDialog browserDialog = new FolderBrowserDialog(); browserDialog.Description = "请选择路径"; try { if (browserDialog.ShowDialog() == DialogResult.OK) { if (string.IsNullOrEmpty(browserDialog.SelectedPath)) { System.Windows.MessageBox.Show("文件夹路径不能为空"); return; } BrowseDataSavePath = browserDialog.SelectedPath; DataExport(BrowseDataSavePath); } } catch (Exception ex) { Console.WriteLine(ex); } }

⑤wpf图片显示的两种操作方式；

方式1：

 /// <summary> /// 图片加载显示完成后释放 /// </summary> /// <param name="imagePath"></param> /// <returns></returns> public static BitmapImage LoadImageFreeze(string imagePath) { try { BitmapImage bitmap = new BitmapImage(); if (File.Exists(imagePath)) { bitmap.BeginInit(); bitmap.CacheOption = BitmapCacheOption.OnLoad;
 using (Stream ms = new MemoryStream(File.ReadAllBytes(imagePath))) { bitmap.StreamSource = ms; bitmap.EndInit(); bitmap.Freeze(); } } return bitmap; } catch (Exception) { return null; } }

方式2：

 /// <summary> /// bitmap转换成imagesoure /// </summary> /// <param name="hObject"></param> /// <returns></returns> [System.Runtime.InteropServices.DllImport("gdi32.dll")] public static extern bool DeleteObject(IntPtr hObject);
 public static ImageSource ChangeBitmapToImageSource(Bitmap bitmap) { IntPtr hBitmap = bitmap.GetHbitmap(); ImageSource wpfBitmap = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap( hBitmap, IntPtr.Zero, Int32Rect.Empty, BitmapSizeOptions.FromEmptyOptions());
 if (!DeleteObject(hBitmap)) { throw new System.ComponentModel.Win32Exception(); } return wpfBitmap; }

⑥datagrid添加RadioButton并实现互斥

                <DataGridTemplateColumn  Header="Radio" MinWidth="50"> <DataGridTemplateColumn.CellTemplate> <DataTemplate> <RadioButton IsChecked="{Binding GroupSelect,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}" GroupName="Mutex" IsEnabled="{Binding RadioEnabled}" /> </DataTemplate> </DataGridTemplateColumn.CellTemplate>                        </DataGridTemplateColumn>

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操作演示

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结尾

链接：https://pan.baidu.com/s/1c8Iv8G-n_oi2iLCpgVl0oQ

提取码联系小编zls20210502获取.