FredGrit

2024年9月16日

WPF DataGrid ContextMenu CommandParameter Relative x:Type ContextMenu ,Path=PlacementTarget

摘要： //xaml <DataGrid.ContextMenu> <ContextMenu> <MenuItem Header="Serialize Binary" Command="{Binding BinSerializeCmd}" CommandParameter="{Binding Relativ 阅读全文

posted @ 2024-09-16 17:43 FredGrit 阅读(24) 评论(0) 推荐(0)

2024年9月14日

WPF this.DragMove() DropShadowEffect

摘要： //xaml <Window x:Class="WpfApp367.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/ 阅读全文

posted @ 2024-09-14 23:42 FredGrit 阅读(31) 评论(0) 推荐(0)

Managed Debugging Assistant 'ContextSwitchDeadlock' : 'The CLR has been unable to transition from COM context 0x28ab560 to COM context 0x28ab4a8 for 60 seconds.

摘要： Managed Debugging Assistant 'ContextSwitchDeadlock' : 'The CLR has been unable to transition from COM context 0x28ab560 to COM context 0x28ab4a8 for 6 阅读全文

posted @ 2024-09-14 15:36 FredGrit 阅读(46) 评论(0) 推荐(0)

C# jsonconvert and binaryformater both in serialize and deserialize

摘要： public DelCmd ExportAllCmd { get; set; } public DelCmd ExportAllBinaryFormatterCmd { get; set; } public DelCmd DeserializeJsonFileCmd { get; set; } pu 阅读全文

posted @ 2024-09-14 12:48 FredGrit 阅读(26) 评论(0) 推荐(0)

WPF datagrid contextmenu menuitem commandparameter CommandParameter="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=ContextMenu},Path=PlacementTarget}"

摘要： Install-package newtonsoft.json <DataGrid.ContextMenu> <ContextMenu> <MenuItem Header="Export Selected" Command="{Binding ExportSelectedCmd}" CommandP 阅读全文

posted @ 2024-09-14 11:13 FredGrit 阅读(37) 评论(0) 推荐(0)

WPF ListBox ListBox.ItemTemplate DataTemplate use Customize Control ImgUrl="{Binding DataContext.ImageUrl,RelativeSource={RelativeSource Mode=FindAncestor,AncestorType={x:Type ListBoxItem}}}

摘要： <ListBox ItemsSource="{Binding BooksCollection,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"> <ListBox.ItemTemplate> <DataTemplate> <Viewbox> <loc 阅读全文

posted @ 2024-09-14 00:00 FredGrit 阅读(33) 评论(0) 推荐(0)

2024年9月13日

WPF Datagrid DataGridTemplateColumn.CellTemplate local:ImageTextblock ImgUrl="{Binding DataContext.ImageUrl,RelativeSource={RelativeSource Mode=FindAncestor,AncestorType={x:Type DataGridRow}}}

摘要： DataGridTemplate.CellTemplate contains one datatemplae will display the customoized control,the key located at the custom control's dependency propert 阅读全文

posted @ 2024-09-13 23:52 FredGrit 阅读(29) 评论(0) 推荐(0)

C# mysql Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.

摘要： add default command timeout=0 as below string connStr = "Server=localhost;database=mydb;username=root;pwd=root;default command timeout=0"; 阅读全文

posted @ 2024-09-13 14:29 FredGrit 阅读(59) 评论(0) 推荐(0)

2024年9月12日

Mysql Non cluster combined fields select where order by field different time cost

摘要： use mydb; drop table if exists t1; create table t1 (id int auto_increment primary key, firstname varchar(100) not null default '', lastname varchar(10 阅读全文

posted @ 2024-09-12 11:49 FredGrit 阅读(20) 评论(0) 推荐(0)

2024年9月11日

WPF Application.Current.Properties[key]=value

摘要： using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows; using System 阅读全文

posted @ 2024-09-11 14:52 FredGrit 阅读(33) 评论(0) 推荐(0)

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