How to bind Data Grid in DevExpress Xamarin - xamarin

Question

Generate headers like so:
public void ClearDataGrid()
{
this.xDataGrid.ItemsSource = null;
//// [Grid Headr 초기 세팅]
//this.xDataGrid.Columns.Clear();
//this.m_Model.MeasureData.Clear();
this.xDataGrid.Columns.Clear();
//// [Wave header 생성]
//Column cNo = GridUtil.Instance.SetColumn(ColumnTypes.Text, "No", "No", new ColumnWidth() { Value = 75 });
//this.xDataGrid.Columns.Add(cNo);
DevExpress.XamarinForms.DataGrid.TextColumn cNo = GridUtil.Instance.SetColumn(ColumnTypes.Text, "No", "No", 75) as DevExpress.XamarinForms.DataGrid.TextColumn;
this.xDataGrid.Columns.Add(cNo);
// [파장값 입력]
for (int i = 0; i < this.m_Model.WaveLength.Count; i++)
{
string strID = string.Empty;
if ((DisplayDataType)Enum.Parse(typeof(DisplayDataType), this.m_Model.DisplayDataUnitType.ToString()) == DisplayDataType.ABS)
{
strID = string.Format("ABS[{0}]", i);
DevExpress.XamarinForms.DataGrid.NumberColumn Col = GridUtil.Instance.SetColumn(
ColumnTypes.Numeric,
strID,
string.Format("A[{0}]", this.m_Model.WaveLength[i]),
150) as DevExpress.XamarinForms.DataGrid.NumberColumn;
this.xDataGrid.Columns.Add(Col);
}
else
{
strID = string.Format("Trans[{0}]", i);
DevExpress.XamarinForms.DataGrid.NumberColumn Col = GridUtil.Instance.SetColumn(
ColumnTypes.Numeric,
strID,
string.Format("T[{0}]", this.m_Model.WaveLength[i]),
150) as DevExpress.XamarinForms.DataGrid.NumberColumn;
this.xDataGrid.Columns.Add(Col);
}
}
DevExpress.XamarinForms.DataGrid.TextColumn cCell = GridUtil.Instance.SetColumn(ColumnTypes.Text, "Cell", "Cell", 75) as DevExpress.XamarinForms.DataGrid.TextColumn;
DevExpress.XamarinForms.DataGrid.DateColumn cDateTime
= GridUtil.Instance.SetColumn(ColumnTypes.Date, "Date", "Date", 150) as DevExpress.XamarinForms.DataGrid.DateColumn;
this.xDataGrid.Columns.Add(cCell);
this.xDataGrid.Columns.Add(cDateTime);
this.xDataGrid.ItemsSource = this.m_Model.MeasureData;
}
When a button is clicked, temporary data is created and added to the bound model.
private async void BtnMeasureClick(object sender, EventArgs e)
{
PhotometricMeasureData data = new PhotometricMeasureData();
++nIndex;
data.No = nIndex.ToString();
data.Cell = string.Format("C[{0}]", nIndex);
data.DateTime = DateTime.Now;
for (int i = 0; i < this.m_Model.WaveLength.Count; i++)
{
data.OriginABS.Add(new Random().Next(-10, 10));
data.OriginTrans.Add(new Random().Next(-10, 10));
data.ABS.Add(data.OriginABS[i] * this.m_Model.Factor);
data.Trans.Add(data.OriginTrans[i] * this.m_Model.Factor);
}
this.m_Model.MeasureData.Add(data);
//this.xDataGrid.Columns[0].Pinned = PinnedPositions.Left;
//this.xDataGrid.ScrollToLastRowByIndex(this.m_Model.MeasureData.Count-1);
}
binding model
public BindingList<PhotometricMeasureData> MeasureData
{
set; get;
} = new BindingList<PhotometricMeasureData>();
public class PhotometricMeasureData : INotifyPropertyChanged
{
//List<float> m_lstABS = new List<float>();
//List<float> m_lstTrans = new List<float>();
public string No { get; set; }
public string Cell { get; set; }
public DateTime DateTime { get; set; }
public BindingList<float> ABS
{
get; set;
} = new BindingList<float>();
public BindingList<float> Trans
{
get; set;
} = new BindingList<float>();
public BindingList<float> OriginABS
{
get; set;
} = new BindingList<float>();
public BindingList<float> OriginTrans
{
get; set;
} = new BindingList<float>();
public void UpdateABSByFactor(float factor)
{
//this.ABS.Clear();
for (int i = 0; i < this.ABS.Count; i++)
{
this.ABS[i] = this.OriginABS[i] * factor;
OnPropertyChanged(string.Format("ABS[{0}]", i));
}
}
public void UpdateTransByFactor(float factor)
{
//this.Trans.Clear();
for (int i = 0; i < this.Trans.Count; i++)
{
this.Trans[i] = this.OriginTrans[i] * factor;
OnPropertyChanged(string.Format("Trans[{0}]", i));
}
}
public event PropertyChangedEventHandler PropertyChanged;
void OnPropertyChanged(string propertyName)
{
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
}
}
In the current bound model, No and Cell DateTime are binding fine.
But the data created by BindingList is not being bound.
When creating a column in the header, the field name was created and inserted like string.Format("ABS[{0}]", i).
And I tried to bind the data accessed by the index of the ABS list of the binding model.
But it doesn't work as well as I thought.
What am I doing wrong?
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