How to call BeginEdit and EndEdit Method on Xamarin.Android ?

Question

I have created a template column cell.And my output comes as i expected. but when i give value on custom maskedit control the CurrentCellEndedit not triggered.

Even i tried with CurrentCellBeginEdit.

Please help me on the above query ASAP.

Code:

DataGrid.cs

var Column = new GridTextColumn();

Column.MappingName = element.ElementName;

Column.HeaderText = element.Caption;

Column.UserCellType = typeof(CustomMaskEdit);

Column.TextMargin = 2;

Column.LoadUIView = true;

datagrid.CurrentCellEndEdit+=(s,e)

{

//Not Triggered.

};

Chandrasekar Sampathkumar · Accepted Answer

Hi Bharath, 
Thank you for your patience. 
Please refer the following code snippets to achieve your requirement, 
Step 1: Using INotifyPropertyChanged 




public class ViewModel : INotifyPropertyChanged 
{ 
    public ViewModel() 
    { 
        SetRowsToGenerate(6); 
    } 
 
    private DataTable dataTable; 
 
    public DataTable DataTable 
    { 
        get { return dataTable; } 
        set  
        { 
            this.dataTable = value; 
            RaisePropertyChanged("DataTable"); 
        } 
    } 
 
    public event PropertyChangedEventHandler PropertyChanged; 
    private void RaisePropertyChanged(String Name) 
    { 
        if (PropertyChanged != null) 
            this.PropertyChanged(this, new PropertyChangedEventArgs(Name)); 
    } 
} 
Step 2: In OnDraw method, set the MaskedEdit value from DataColumn.CellValue 




public class CustomCell : GridCell 
{ 
    SfMaskedEdit maskedEdit; 
 
    public CustomCell(Context context) : base(context) 
    { 
        maskedEdit = new SfMaskedEdit(context); 
        maskedEdit.Mask = @"00/00/0000"; 
        maskedEdit.Focusable = true; 
        this.maskedEdit.FocusChange += MaskedEdit_FocusChange1; 
        this.AddView(maskedEdit); 
    } 
 
    protected override void OnDraw(Canvas canvas) 
    { 
        base.OnDraw(canvas); 
 
        if (maskedEdit.Value.ToString() == "") 
        { 
            //During initialization, Update the MaskedEdit value with the DataTable value 
            maskedEdit.Value = (DataColumn.CellValue.ToString()); 
        } 
        else if (maskedEdit.Value.ToString() != "" && DataColumn.CellValue.ToString() != maskedEdit.Value.ToString()) 
        { 
            //On Editing, Update the DataTable value with the MaskedEdit value 
            DataColumn.Renderer.DataGrid.View.GetItemProperties(). 
            SetValue(DataColumn.RowData, maskedEdit.Value.ToString(), DataColumn.GridColumn.MappingName); 
        }             
    } 
} 
Step 3: Set the DataTable as DataGrid ItemsSource 




protected override void OnCreate(Bundle savedInstanceState) 
{ 
    base.OnCreate(savedInstanceState); 
    Xamarin.Essentials.Platform.Init(this, savedInstanceState); 
    // Set our view from the "main" layout resource 
    LinearLayout layout = new LinearLayout(this); 
    layout.Orientation = Orientation.Vertical; 
    layout.SetBackgroundColor(Color.White); 
    viewModel = new ViewModel(); 
    sfgrid = new SfDataGrid(this); 
    sfgrid.ItemsSource = viewModel.DataTable; 
    sfgrid.AutoGenerateColumns = false; 
    sfgrid.AllowEditing = true; 
    sfgrid.SelectionMode = SelectionMode.Single; 
    sfgrid.NavigationMode = NavigationMode.Cell; 
    sfgrid.RowHeight = 50; 
 
    var Column = new GridTextColumn(); 
    Column.MappingName = "Name"; 
    Column.HeaderText = "Caption"; 
    Column.UserCellType = typeof(CustomCell); 
    Column.TextMargin = 2; 
 
    sfgrid.Columns.Add(Column); 
 
    sfgrid.CurrentCellBeginEdit += Sfgrid_CurrentCellBeginEdit; 
    sfgrid.CurrentCellEndEdit += Sfgrid_CurrentCellEndEdit; 
 
    layout.AddView(sfgrid); 
    SetContentView(layout); 
} 
We have prepared simple sample based on you requirement and you can download the same using the following link, 
Sample Link: Sample 
Please let us know if you would require any further assistance on this. 
Regards, 
Chandrasekar Sampathkumar

Chandrasekar Sampathkumar · Answer

Hi Bharath, 
Thank you for using Syncfusion products. 
We have checked the reported query from our end. We have prepared simple sample based on your requirement and we regret to let you know that we are not able to replicate the reported issue. We have attached the tested sample for your reference and you can download the same using the following link, 
Sample Link: https://www.syncfusion.com/downloads/support/directtrac/general/ze/DataGridAndroid430297888.zip 
Could you please replicate the issue for us in the provided sample or share the code snippets for CustomMaskEdit which would be helpful for us to check on it and provide you solution at the earliest. 
Regards, 
Chandrasekar Sampathkumar

Bharath · Answer

Can you please share me the example for MaskEdit Column Cell on Xamarin Android ?

Karthikraja Kalaimani · Answer

Hi Bharath, We have checked with SfMaskedEdit control and we saw that when tap on gridcell the focus goes to SfMaskedEdit control because SfMaskedEdit is an editable control. So, only the begin edit and end edit event’s are not triggered. However, you can write your begin edit operation and end edit operation on FocusChange event of the SfMaskedEdit control. Please refer to the below code snippet and attached sample. Code snippet :  




public class CustomCell : GridCell 
    { 
 
        SfMaskedEdit maskedEdit; 
 
        public CustomCell(Context context) : base(context) 
        { 
           maskedEdit = new SfMaskedEdit(context); 
            maskedEdit.Mask = "00/00/0000"; 
            maskedEdit.Value = @"14/11/2014"; 
            maskedEdit.Focusable = true; 
            this.maskedEdit.FocusChange += MaskedEdit_FocusChange1; 
            this.AddView(maskedEdit); 
        } 
 
        private void MaskedEdit_FocusChange1(object sender, FocusChangeEventArgs e) 
        { 
            if (e.HasFocus) 
            { 
                //BeginEdit operation 
            } 
            else 
            {  
               //EndEdit opertation 
            } 
        } 
 
        protected override void OnDraw(Canvas canvas) 
        { 
            base.OnDraw(canvas); 
        } 
    } 
Sample link : https://www.syncfusion.com/downloads/support/directtrac/general/ze/DataGridAndroid430297888896481376.zipRegards,Karthik  Raja

Bharath · Answer

Hi Bharath, We have checked with SfMaskedEdit control and we saw that when tap on gridcell the focus goes to SfMaskedEdit control because SfMaskedEdit is an editable control. So, only the begin edit and end edit event’s are not triggered. However, you can write your begin edit operation and end edit operation on FocusChange event of the SfMaskedEdit control. Please refer to the below code snippet and attached sample. Code snippet :  




public class CustomCell : GridCell 
    { 
 
        SfMaskedEdit maskedEdit; 
 
        public CustomCell(Context context) : base(context) 
        { 
           maskedEdit = new SfMaskedEdit(context); 
            maskedEdit.Mask = "00/00/0000"; 
            maskedEdit.Value = @"14/11/2014"; 
            maskedEdit.Focusable = true; 
            this.maskedEdit.FocusChange += MaskedEdit_FocusChange1; 
            this.AddView(maskedEdit); 
        } 
 
        private void MaskedEdit_FocusChange1(object sender, FocusChangeEventArgs e) 
        { 
            if (e.HasFocus) 
            { 
                //BeginEdit operation 
            } 
            else 
            {  
               //EndEdit opertation 
            } 
        } 
 
        protected override void OnDraw(Canvas canvas) 
        { 
            base.OnDraw(canvas); 
        } 
    } 
Sample link : https://www.syncfusion.com/downloads/support/directtrac/general/ze/DataGridAndroid430297888896481376.zipRegards,Karthik  Raja Thanks, One more thing how to update column cell value on runtime.Currently,  i am  binding datatable on itemsource and i have used INotifypropertyChanged, but its not working.

Chandrasekar Sampathkumar · Answer

Hi Bharath, 
Thank you for the update. 
We are currently validating the reported scenario and update your further details by two business days (April 9th, 2021). We appreciate your patience until then. 
Regards, 
Chandrasekar Sampathkumar