datatable 相关问题

术语“数据表”是不明确的。在.NET中，它是一个表示内存数据表的类。在基于组件的MVC框架（如JSF和Wicket）中，它是一个UI组件，它基于集合动态呈现HTML表。对于jQuery DataTables插件，请使用[datatables]标签，对于data.table R包，请使用[data.table]。

将表设置为静态数据表以进行报告查看器集成时遇到问题

我试图将这些表指定为静态数据表，但我在另一个类中使用此数据时遇到了问题。最终，我的目标是将此功能与 Reporting Vie 集成...

c# winforms datatable dataset reportviewer

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如何使用 java 脚本传递已选中复选框的 LICN_CIVIL_ID 列表（以 true 分隔逗号）？

我使用java脚本工作，我使用JavaScript在网格视图上显示数据，并使用函数GET_WORLD_BANK_LICN_DATA_REP()在网格视图gvResults上显示成功所以数据在网格视图上显示成功

javascript html jquery gridview datatable

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如何通过Jquery在“data-row-num”中添加动态值

我想为我的 HTML 表格行添加 (data-row-num="1",data-row-num="2",data-row-num="3") 。有人可以帮我这样做吗？我想为我的 HTML 表格行添加 (data-row-num="1",data-row-num="2",data-row-num="3") 。有人可以帮我这样做吗？ <table id="example" class="table table-striped first-table" style="width:100%"> <thead> <tr> <th>Name</th> <th>Position</th> <th>Office</th> </tr> </thead> <tbody> <tr> <td>Tiger Nixon</td> <td>System Architect</td> <td>Edinburgh</td> </tr> <tr> <td>Cedric Kelly</td> <td>Senior Javascript Developer</td> <td>Edinburgh</td> </tr> </tbody></table> <script type="text/javascript"> $(document).ready(function() { $('#example').dataTable( { } ); } ); $("tr").each(function() { $("tr").attr("data-row-num",????); }); <script> 您需要修改您的代码，如下所示： var counter = 1; $("tbody tr").each(function() { $(this).attr("data-row-num",counter); counter++; });

jquery datatable

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使用 TemplateColumns 将 WPF DataGrid 绑定到 DataTable

我已经尝试了一切但一无所获，所以我希望有人能给我一个顿悟的时刻。我根本无法获得成功提取数据网格中数据的绑定。我有一个数据表，可以...

wpf data-binding binding datagrid datatable

回答 3 投票 0

将Cell中具有CustomClass的DataTable绑定到DataGrid WPF

我有数据网格。我有数据网格。 <DataGrid ItemsSource="{Binding DataView}" x:Name="AttributeGrid" AutoGenerateColumns="False" CanUserAddRows="False" CanUserDeleteRows="False" EnableColumnVirtualization="False" EnableRowVirtualization="False" DataContextChanged="AttributeGrid_DataContextChanged"> </DataGrid> 对于该 DataGrid 的单元格，我有自定义样式 <Style x:Key="DataGridDataViewCustomCellStyle" TargetType="{x:Type DataGridCell}"> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="DataGridCell"> <Grid> <ComboBox x:Name="ComboBoxCondition" IsEditable="True" ItemsSource="{Binding Values}" Visibility="Collapsed" SelectedValue="{Binding SelectedValue, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" SelectedValuePath="ValueID" DisplayMemberPath="ValueStr"/> <TextBox x:Name="TextBoxCondition" Text="{Binding TextValue, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" IsEnabled="True" Visibility="Collapsed"/> <DatePicker x:Name="DateCondition" Text="{Binding DateValue, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" IsEnabled="True" Visibility="Collapsed"/> </Grid> <ControlTemplate.Triggers> <DataTrigger Binding="{Binding ValueType}" Value="Text"> <Setter Property="Visibility" TargetName="TextBoxCondition" Value="Visible"/> <Setter Property="Visibility" TargetName="ComboBoxCondition" Value="Hidden"/> <Setter Property="Visibility" TargetName="DateCondition" Value="Hidden"/> </DataTrigger> <DataTrigger Binding="{Binding ValueType}" Value="Combobox"> <Setter Property="Visibility" TargetName="TextBoxCondition" Value="Hidden"/> <Setter Property="Visibility" TargetName="ComboBoxCondition" Value="Visible"/> <Setter Property="Visibility" TargetName="DateCondition" Value="Hidden"/> </DataTrigger> <DataTrigger Binding="{Binding ValueType}" Value="Date"> <Setter Property="Visibility" TargetName="TextBoxCondition" Value="Hidden"/> <Setter Property="Visibility" TargetName="ComboBoxCondition" Value="Hidden"/> <Setter Property="Visibility" TargetName="DateCondition" Value="Visible"/> </DataTrigger> <DataTrigger Binding="{Binding IsModified, Mode=OneWay, UpdateSourceTrigger=PropertyChanged}" Value="True"> <Setter Property="Background" TargetName="TextBoxCondition" Value="Cornsilk"/> <Setter Property="Background" TargetName="ComboBoxCondition" Value="Cornsilk"/> <Setter Property="Background" TargetName="DateCondition" Value="Cornsilk"/> </DataTrigger> <DataTrigger Binding="{Binding IsModified, Mode=OneWay, UpdateSourceTrigger=PropertyChanged}" Value="False"> <Setter Property="Background" TargetName="TextBoxCondition" Value="White"/> <Setter Property="Background" TargetName="ComboBoxCondition" Value="White"/> <Setter Property="Background" TargetName="DateCondition" Value="White"/> </DataTrigger> </ControlTemplate.Triggers> </ControlTemplate> </Setter.Value> </Setter> </Style> 如果 DataView 基于 List<object> gridAttributes = new List<AttributeItem>(); gridAttributes add some data ..... DataView = CollectionViewSource.GetDefaultView(gridAttributes); 一切都按预期进行。在 DataGridCell 中，我有 AttributeIem 对象，并且可以根据需要设置其样式。但是，当 DataView 基于 DataTable 时，然后在 DataGridCell 中，由于某种原因我得到了 DataRowView，然后 Style 不起作用，一切都出错了。 RunDataTable.Rows.Clear(); RunDataTable.Columns.Clear(); RunDataTable.Columns.Add("SectionName"); RunDataTable.Columns.Add("RunName"); foreach (AttributeItem attr in gridAttributes) { RunDataTable.Columns.Add(attr.AttributeName, typeof(AttributeItem)); } DataRow row = RunDataTable.NewRow(); row["SectionName"] = section; row["RunName"] = name; foreach (AttributeItem item in gridAttributes) { row[item.AttributeName] = item; } RunDataTable.Rows.Add(row); DataView = new DataView(RunDataTable); 这是我收到的错误绑定列表 System.Windows.Data Error: 40 : BindingExpression path error: 'IsModified' property not found on 'object' ''DataRowView' (HashCode=47477033)'. BindingExpression:Path=IsModified; DataItem='DataRowView' (HashCode=47477033); target element is 'DataGridCell' (Name=''); target property is 'NoTarget' (type 'Object') System.Windows.Data Error: 40 : BindingExpression path error: 'Values' property not found on 'object' ''DataRowView' (HashCode=47477033)'. BindingExpression:Path=Values; DataItem='DataRowView' (HashCode=47477033); target element is 'ComboBox' (Name=''); target property is 'ItemsSource' (type 'IEnumerable') System.Windows.Data Error: 40 : BindingExpression path error: 'SelectedValue' property not found on 'object' ''DataRowView' (HashCode=47477033)'. BindingExpression:Path=SelectedValue; DataItem='DataRowView' (HashCode=47477033); target element is 'ComboBox' (Name=''); target property is 'SelectedValue' (type 'Object') System.Windows.Data Error: 40 : BindingExpression path error: 'TextValue' property not found on 'object' ''DataRowView' (HashCode=47477033)'. BindingExpression:Path=TextValue; DataItem='DataRowView' (HashCode=47477033); target element is 'TextBox' (Name=''); target property is 'Text' (type 'String') System.Windows.Data Error: 40 : BindingExpression path error: 'DateValue' property not found on 'object' ''DataRowView' (HashCode=47477033)'. BindingExpression:Path=DateValue; DataItem='DataRowView' (HashCode=47477033); target element is 'DatePicker' (Name=''); target property is 'Text' (type 'String') System.Windows.Data Error: 40 : BindingExpression path error: 'ValueType' property not found on 'object' ''DataRowView' (HashCode=47477033)'. BindingExpression:Path=ValueType; DataItem='DataRowView' (HashCode=47477033); target element is 'DataGridCell' (Name=''); target property is 'NoTarget' (type 'Object') System.Windows.Data Error: 40 : BindingExpression path error: 'ValueType' property not found on 'object' ''DataRowView' (HashCode=47477033)'. BindingExpression:Path=ValueType; DataItem='DataRowView' (HashCode=47477033); target element is 'DataGridCell' (Name=''); target property is 'NoTarget' (type 'Object') System.Windows.Data Error: 40 : BindingExpression path error: 'ValueType' property not found on 'object' ''DataRowView' (HashCode=47477033)'. BindingExpression:Path=ValueType; DataItem='DataRowView' (HashCode=47477033); target element is 'DataGridCell' (Name=''); target property is 'NoTarget' (type 'Object') System.Windows.Data Error: 40 : BindingExpression path error: 'IsModified' property not found on 'object' ''DataRowView' (HashCode=47477033)'. BindingExpression:Path=IsModified; DataItem='DataRowView' (HashCode=47477033); target element is 'DataGridCell' (Name=''); target property is 'NoTarget' (type 'Object') System.Windows.Data Error: 40 : BindingExpression path error: 'IsModified' property not found on 'object' ''DataRowView' (HashCode=47477033)'. BindingExpression:Path=IsModified; DataItem='DataRowView' (HashCode=47477033); target element is 'DataGridCell' (Name=''); target property is 'NoTarget' (type 'Object') System.Windows.Data Error: 40 : BindingExpression path error: 'Values' property not found on 'object' ''DataRowView' (HashCode=47477033)'. BindingExpression:Path=Values; DataItem='DataRowView' (HashCode=47477033); target element is 'ComboBox' (Name=''); target property is 'ItemsSource' (type 'IEnumerable') System.Windows.Data Error: 40 : BindingExpression path error: 'SelectedValue' property not found on 'object' ''DataRowView' (HashCode=47477033)'. BindingExpression:Path=SelectedValue; DataItem='DataRowView' (HashCode=47477033); target element is 'ComboBox' (Name=''); target property is 'SelectedValue' (type 'Object') System.Windows.Data Error: 40 : BindingExpression path error: 'TextValue' property not found on 'object' ''DataRowView' (HashCode=47477033)'. BindingExpression:Path=TextValue; DataItem='DataRowView' (HashCode=47477033); target element is 'TextBox' (Name=''); target property is 'Text' (type 'String') System.Windows.Data Error: 40 : BindingExpression path error: 'DateValue' property not found on 'object' ''DataRowView' (HashCode=47477033)'. BindingExpression:Path=DateValue; DataItem='DataRowView' (HashCode=47477033); target element is 'DatePicker' (Name=''); target property is 'Text' (type 'String') 任何建议我如何调整我的样式或代码隐藏以使其正常工作。谢谢。我尝试了不同的数据源方式。但不幸的是每次我都会遇到同样的错误添加列： public static void RefreshColumnsFromModel(this DataGrid datagrid, DataGridRuns gridModel) { var myResourceDictionary = new ResourceDictionary(); myResourceDictionary.Source = new Uri("/SomeSource;component/Resources/SomeSource.xaml", UriKind.RelativeOrAbsolute); datagrid.Columns.Clear(); foreach (ColumnWithFilter column in gridModel.Columns.OrderBy(c => c.Index)) { if (column.IsReadOnly) { datagrid.Columns.Add( new DataGridTextColumn() { Header = column.ColumnHeader, IsReadOnly = column.IsReadOnly, Binding = new Binding(column.ColumnBinding), CellStyle = myResourceDictionary["DataGridReadOnlyCellStyle"] as Style, HeaderTemplate = datagrid.Resources["HeaderTemplate"] as DataTemplate } ); } else { datagrid.Columns.Add( new DataGridTemplateColumn() { Header = column.ColumnHeader, IsReadOnly = column.IsReadOnly, //Binding = new Binding(column.ColumnBinding), //HeaderTemplate = myResourceDictionary["HeaderTemplate"] as DataTemplate HeaderTemplate = datagrid.Resources["HeaderTemplate"] as DataTemplate, CellStyle = myResourceDictionary["DataGridDataViewCustomCellStyle"] as Style } ); } } } DataGridRuns 代表 DataGrid 的模型，一些用于过滤和排序的自定义行为 public class DataGridRuns : BaseClass { private List<AttributeItem> gridAttributes = new List<AttributeItem>(); public ObservableCollection<AttributeItem> GridAttributes { get { return new ObservableCollection<AttributeItem>(gridAttributes); } set { gridAttributes = value.ToList(); RaisePropertyChanged(); } } public DataTable RunDataTable { get; set; } = new DataTable("RunData"); private DataView dataView = null; public DataView DataView { get { return dataView; } } private ColumnWithFilter selectedColumn = null; public ColumnWithFilter SelectedColumn { get { return selectedColumn; } set { selectedColumn = value; RaisePropertyChanged(); } } public Action RefreshColumns; private List<ColumnWithFilter> columns = new List<ColumnWithFilter>(); public ObservableCollection<ColumnWithFilter> Columns { get { return new ObservableCollection<ColumnWithFilter>(columns); } set { columns = value.ToList(); RaisePropertyChanged(); } } public DataGridRuns() { } private List<AttributeItem> CreateAttributesFromInfo(IList<AttributeInfo> _attributes) { List<AttributeItem> result = new List<AttributeItem>(); try { foreach (var attr in _attributes) { result.Add(new AttributeItem(attr)); } } catch (Exception ex) { } return result; } public void AddRun(string section, string name, IList<AttributeInfo> _attributes, bool template = false) { var attr = CreateAttributesFromInfo(_attributes); if (gridAttributes == null || gridAttributes.Count() == 0) { gridAttributes = new List<AttributeItem>(attr); CreateColumns(); } DataRow row = RunDataTable.NewRow(); row["SectionName"] = section; row["RunName"] = name; foreach (AttributeItem item in gridAttributes) { row[item.AttributeName] = item; } RunDataTable.Rows.Add(row); dataView = new DataView(RunDataTable); //dataView = CollectionViewSource.GetDefaultView(RunDataTable); } public void ClearData() { gridAttributes.Clear(); gridAttributes = new List<AttributeItem>(); } public void CreateColumns() { RunDataTable.Rows.Clear(); RunDataTable.Columns.Clear(); columns = new List<ColumnWithFilter>(); ColumnWithFilter col = null; col = new ColumnWithFilter("Section Name", nameof(AttributeItem.SectionName)) { Index = 0, IsReadOnly = true, }; columns.Add(col); RunDataTable.Columns.Add("SectionName"); col = new ColumnWithFilter("Run Name", nameof(AttributeItem.RunName)) { Index = 1, IsReadOnly = true, }; columns.Add(col); RunDataTable.Columns.Add("RunName"); int colIndex = 1; foreach (AttributeItem attr in gridAttributes) { col = new ColumnWithFilter(attr.AttributeName, nameof(attr)) { Index = ++colIndex, IsReadOnly = false, }; columns.Add(col); RunDataTable.Columns.Add(attr.AttributeName, typeof(AttributeItem)); } } public void RefreshDataView() { foreach (DataRow item in RunDataTable.Rows) { item.ItemArray.ToList().ForEach(a => (a as AttributeItem)?.StartMarkingModifications()); } RaisePropertyChanged(nameof(DataView)); } public void RefreshPopupContent(string header = "") { selectedColumn = columns.Where(c => c.ColumnHeader.Equals(header)).FirstOrDefault(); if (selectedColumn == null) return; selectedColumn.RefreshFilterValues(gridAttributes .Where(a => !string.IsNullOrEmpty((string)GetPropertyValue(a, selectedColumn.ColumnBinding))) .Select(a => (string)GetPropertyValue(a, selectedColumn.ColumnBinding)).Distinct().ToList()); RaisePropertyChanged(nameof(SelectedColumn)); } public void Filtering() { UpdateDataViewRowFilter(); } private void UpdateDataViewRowFilter() { string rowFilter = string.Empty; foreach (ColumnWithFilter column in columns.Where(c => c.FilterIndex > 0)) { string andStr = !string.IsNullOrEmpty(rowFilter) ? " AND " : ""; switch (column.FilterIndex) { case 1: rowFilter += andStr + $"{column.ColumnBinding} IS NULL"; break; default: rowFilter += andStr + $"{column.ColumnBinding} = '{column.FilteredValue}'"; //filterResult = ((string)GetPropertyValue(attribute, column.ColumnBinding)).Equals(column.FilteredValue); break; } } (dataView as DataView).RowFilter = rowFilter; } public object GetPropertyValue(object obj, string propertyName) { return obj.GetType().GetProperty(propertyName)?.GetValue(obj, null); } } 这是我在 DataTable 中看到的，我希望在 DataGrid 中也能看到同样的结果 DataTable Visualizer 的屏幕截图添加这是我在 UI 中看到的具有列过滤的自定义网格我不确定我是否正确理解了您的所有代码。我会根据我能理解的提供一个解决方案。在数据表单元格中，您的类型为“AttributeItem”。具有路径“column.ColumnBinding”的绑定将从相应的单元格返回该类型的实例。 ValueType 和 IsModified 属性（在 ControlTemplate 中使用）属于此实例。在这种情况下，我认为您错误地使用了 DataGridCell 样式更改。相反，您需要为单元格的内容创建一个数据模板。 <DataTemplate x:Key="DataGridDataViewCustomCellDataTemplate"> <Grid> <ComboBox x:Name="ComboBoxCondition" IsEditable="True" ItemsSource="{Binding Values}" Visibility="Collapsed" SelectedValue="{Binding SelectedValue, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" SelectedValuePath="ValueID" DisplayMemberPath="ValueStr"/> <TextBox x:Name="TextBoxCondition" Text="{Binding TextValue, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" IsEnabled="True" Visibility="Collapsed"/> <DatePicker x:Name="DateCondition" Text="{Binding DateValue, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" IsEnabled="True" Visibility="Collapsed"/> </Grid> <DataTemplate.Triggers> <DataTrigger Binding="{Binding ValueType}" Value="Text"> <Setter Property="Visibility" TargetName="TextBoxCondition" Value="Visible"/> <Setter Property="Visibility" TargetName="ComboBoxCondition" Value="Hidden"/> <Setter Property="Visibility" TargetName="DateCondition" Value="Hidden"/> </DataTrigger> <DataTrigger Binding="{Binding ValueType}" Value="Combobox"> <Setter Property="Visibility" TargetName="TextBoxCondition" Value="Hidden"/> <Setter Property="Visibility" TargetName="ComboBoxCondition" Value="Visible"/> <Setter Property="Visibility" TargetName="DateCondition" Value="Hidden"/> </DataTrigger> <DataTrigger Binding="{Binding ValueType}" Value="Date"> <Setter Property="Visibility" TargetName="TextBoxCondition" Value="Hidden"/> <Setter Property="Visibility" TargetName="ComboBoxCondition" Value="Hidden"/> <Setter Property="Visibility" TargetName="DateCondition" Value="Visible"/> </DataTrigger> <DataTrigger Binding="{Binding IsModified, Mode=OneWay, UpdateSourceTrigger=PropertyChanged}" Value="True"> <Setter Property="Background" TargetName="TextBoxCondition" Value="Cornsilk"/> <Setter Property="Background" TargetName="ComboBoxCondition" Value="Cornsilk"/> <Setter Property="Background" TargetName="DateCondition" Value="Cornsilk"/> </DataTrigger> <DataTrigger Binding="{Binding IsModified, Mode=OneWay, UpdateSourceTrigger=PropertyChanged}" Value="False"> <Setter Property="Background" TargetName="TextBoxCondition" Value="White"/> <Setter Property="Background" TargetName="ComboBoxCondition" Value="White"/> <Setter Property="Background" TargetName="DateCondition" Value="White"/> </DataTrigger> </DataTemplate.Triggers> </DataTemplate> 在模板 DataGridTemplateColumn 中，您需要创建一个带有 ContentControl 的模板，该模板将接受 Content 属性中路径“column.ColumnBinding”的绑定以及上述 ContentTemplate 属性中的模板。 private const string templateString = @" <DataTemplate xmlns=""http://schemas.microsoft.com/winfx/2006/xaml/presentation""> <ContentControl Content=""{{Binding {0}}}"" ContentTemplate=""{{DynamicResource DataGridDataViewCustomCellDataTemplate}}""/> </DataTemplate> "; public static void RefreshColumnsFromModel(this DataGrid datagrid, DataGridRuns gridModel) { var myResourceDictionary = new ResourceDictionary(); myResourceDictionary.Source = new Uri("/SomeSource;component/Resources/SomeSource.xaml", UriKind.RelativeOrAbsolute); datagrid.Columns.Clear(); foreach (ColumnWithFilter column in gridModel.Columns.OrderBy(c => c.Index)) { if (column.IsReadOnly) { datagrid.Columns.Add( new DataGridTextColumn() { Header = column.ColumnHeader, IsReadOnly = column.IsReadOnly, Binding = new Binding(column.ColumnBinding), CellStyle = myResourceDictionary["DataGridReadOnlyCellStyle"] as Style, HeaderTemplate = datagrid.Resources["HeaderTemplate"] as DataTemplate } ); } else { string templateSource = string.Format(templateString, column.ColumnBinding); var template = XamlReader.Parse(templateSource); datagrid.Columns.Add( new DataGridTemplateColumn() { Header = column.ColumnHeader, IsReadOnly = column.IsReadOnly, //Binding = new Binding(column.ColumnBinding), //HeaderTemplate = myResourceDictionary["HeaderTemplate"] as DataTemplate HeaderTemplate = datagrid.Resources["HeaderTemplate"] as DataTemplate, CellStyle = myResourceDictionary["DataGridDataViewCustomCellStyle"] as Style } ); } } } 不幸的是，我无法测试这段代码。但如果您提供重现这些情况的最少代码，我可以进行测试并准备有保证的工作版本。

wpf data-binding datatable datagrid

回答 1 投票 0

在 SAS 中转置多列

我有一个数据集，如下所示：帐号 6m 7m 8m 9m 10m 11m 1 更好 X < 10 X < 10 Better X < 30 X < 30 2 X <...

datatable sas dataset transpose frequency

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数据表排序数字无法正常工作

我在我的页面上使用数据表，它似乎工作正常，除了当你在数字字段上排序时，它以一种奇怪的方式排序，看看插图这个还有我已经尝试过...

javascript jquery datatable datatables

回答 2 投票 0

自定义排序数据表列 - 首先是所有数字、字符串和 null

我正在尝试根据自定义要求对数据表进行排序，其中我需要对第一个数字、第二个字符串进行排序，然后对表底部的空值进行排序。我已经创建了数据表，其中有 c...