Datagrid不显示完整的数据Datatable

Question

我正在从数据库加载DataTable，但不希望它看起来的样子。这就是为什么我决定创建一个新的DataTable，并用我收到的数据填充它。 不幸的是，数据并没有完全显示在DataGrid中。更详细地说，只显示第一列，但其他列不显示。在调试时，我可以确保DataTable正确填充。

有没有人有想法我做错了什么？

型号：

internal DataTable getValueTable(ObservableCollection<CheckableMenuitem> listSelectableValues) 
{ 
    DataTable TableToReturn = new DataTable(); 

    string LaborValueColumnCaption = Properties.Resources.LabValueColumnCaption; 
    TableToReturn.Columns.Add(LaborValueColumnCaption); 

    List<string> selectedValueNames = new List<string>(); 
    foreach (CheckableMenuitem item in listSelectableValues.Where(x => x.IsChecked == true)) 
    { 
     selectedValueNames.Add(item.Caption); 
    } 

    string selectionFormular = "Wertname in ('" + string.Join("', '", selectedValueNames) + "')"; 
    DataRow[] selectionRows = fullValueTable.Select(selectionFormular); 

    HashSet<DateTime> ListOfDays = new HashSet<DateTime>(); 

    foreach (DataRow item in selectionRows) 
    { 
     DateTime? Tmp = Functions.ParseNullableDate(item["Messdatum"].ToString()); 
     if (Tmp != null) 
     { 
      ListOfDays.Add(((DateTime)Tmp).Date); 
     } 
    } 

    string DateFormatString = "dd.MM.yyyy"; 

    foreach (DateTime date in ListOfDays) 
    { 
     TableToReturn.Columns.Add(date.ToString(DateFormatString)); 
    } 


    foreach (var valueName in selectedValueNames) 
    { 
     string singleSelectionFormular = "Wertname ='" + valueName + "'"; 
     List<DataRow> singleSelectionRows = fullValueTable.Select(singleSelectionFormular).ToList(); 

     if (singleSelectionRows.Count() == 1) 
     { 
      DateTime? ValueDate = Functions.ParseNullableDate(singleSelectionRows[0]["Messdatum"].ToString()); 

      if (ValueDate != null) 
      { 

      } 

      DataRow newRow = TableToReturn.NewRow(); 

      //erste Spalte 
      newRow[LaborValueColumnCaption] = valueName; 

      string spalte = ((DateTime)ValueDate).ToString(DateFormatString); 

      newRow[spalte] = singleSelectionRows[0]["MESSWERT_ALPHA"].ToString(); 
      //newRow[((DateTime)ValueDate).ToString(DateFormatString)] = singleSelectionRows[0]["MESSWERT_ALPHA"].ToString(); 

      TableToReturn.Rows.Add(newRow); 
     } 

     if (singleSelectionRows.Count() > 1) 
     { 
      List<DataRow> Rows = new List<DataRow>() { TableToReturn.NewRow() }; 
      Rows[0][LaborValueColumnCaption] = valueName; 

      HashSet<DateTime> usedDates = new HashSet<DateTime>(); 

      foreach (var item in singleSelectionRows) 
      { 
       DateTime? ValueDate = Functions.ParseNullableDate(singleSelectionRows[0]["Messdatum"].ToString()); 

       if (ValueDate != null) 
       { 
        DateTime Date = ((DateTime)ValueDate).Date; 

        if (usedDates.Add(Date)) 
        { 
         string name = "Wertname ='" + valueName + "' and Messdatum > " + Date + " and Messdatum < " + Date.AddDays(1); 
         DataRow[] test2 = fullValueTable.Select(singleSelectionFormular); 
         //Rows[0][((DateTime)ValueDate).ToString(DateFormatString)] = singleSelectionRows[0]["MESSWERT_ALPHA"].ToString(); 
        } 
       } 
      } 

      foreach (DataRow newRow in Rows) 
      { 
       TableToReturn.Rows.Add(newRow); 
      } 
     } 
    } 

    return TableToReturn; 
} 

视图模型：

public DataTable ValueTable 
{ 
    get 
    { 
     return model.getValueTable(ListSelectableValues); 
    } 
} 

查看：

<DataGrid DockPanel.Dock="Top" VerticalScrollBarVisibility="Auto" HorizontalScrollBarVisibility="Auto" AutoGenerateColumns="True" ItemsSource="{Binding Path=ValueTable}"/> 

编辑： enter image description here

Answer 1

问题上奠定日期格式：

wpf datatable column name can not have slash /

干杯，

马尔科