WPF MVVM Dynamic DataTable Binding does not show value of cells-CodePudding

I have a DataGrid that shows Data from a DataTable which is bound into my code-behind. (The TableData I want to draw is depending on the selectedItem of a ComboBox. It changes the column headers when changing the selectedItem, so i think this is not a problem. See this in the two prictures below)

So, the DataGrid in .xaml looks like this:

  <DataGrid AutoGenerateColumns="True" ItemsSource="{Binding Path=CurrentTable.CurrentDataTable.DefaultView}" >
  </DataGrid>

In my ViewModel I have an object named "CurrentTable" from the class TableInformation. It looks like this:

public class TableInformation : BaseViewModel
  {
    public string TableName; //with geter, seter
    public DataTable CurrentDataTable; //with geter, seter
  }

with inheritates from BaseViewModel because of the PropertyChanged Event (this works fine!).

When loading my CurrentTable, the code looks like this:

public void LoadInitialJsonData()
    {
      // Fill all table data
      QtyTopLevelKeys = BPPCjson_if.BPPCjson_getTableCount(context);
      for (int curTableIdx = 0; curTableIdx < QtyTopLevelKeys; curTableIdx  )
      {
        int    qtyRows      = // rowCount
        int    qtyCols      = // columnCount
        var    curDataTable = new DataTable();

        // set Header Name for each column
        for (int curCol = 0; curCol < qtyCols; curCol  )
        {
          string curHeader = //unique headername from interface
          if (!curDataTable.Columns.Contains(curHeader)) 
          { 
            curDataTable.Columns.Add(curHeader, typeof(string));
            // PropertyChangedEvent has no effect here
          }
        }

        // set Value for each cell
        for (int curRow = 0; curRow < qtyRows; curRow  )
        {
          DataRow curRowData;
          curRowData = curDataTable.NewRow();
          for (int curCol = 0; curCol < qtyCols; curCol  )
          {
            string data = //value of cell
            curRowData[curCol] = data;
          }
          curDataTable.Rows.Add(curRowData);
        }
        curDataTable.TableName = //unique Name
        TableInformation ti = new TableInformation(curTableName, qtyRows, qtyCols, curDataTable);
        AllTables.Add(ti);
      }
    }

Unfortunately, the shown Table looks like this:

Cell-values not shown but cells are existing 1

Cell-values not shown but cells are existing 2

Can you help me? Why does it show the correct amount of Rows/Cells but without any content?

It also says that I have binding errors. But i do not really understand why... Binding errors

Thank you very much for your help!!!

CodePudding user response：

I found it by myself and with a little help of @ASh.

My "unique headernames" did contain dots.

All I did was replacing googling what could help.

This helped me: https://social.msdn.microsoft.com/Forums/vstudio/en-US/7d84c8f2-2709-4642-a259-739036ffd2a6/having-a-dot-in-column-name-will-cause-datagrid-cells-to-be-empty?forum=wpf