Checkbox row selection in gridgroupingcontrol, continually adding rows.

[James]

Hi,

I've been running into an error when trying to do checkbox row selection with the gridgroupingcontrol.

I've based my code off of thishttp://www.syncfusion.com/forums/105749/Check-box-for-row-selection-in-grid-grouping-control

While this works when the datatable is not changing when I am adding rows to the datatable the checkbox selection is incorrect, sometimes the checkboxes get unchecked or moved.

I will attach a video showing the offending behaviour. (Sorry the video goes on about 20 seconds too long )

I have also attached some code showing you how rows is added and how i'm handling checkboxes

(dmTable is a DataTable)

//partial code

{..

this.gridGroupingControl1.DataSource = this.dmTable;

//Disallow Editing

this.gridGroupingControl1.ActivateCurrentCellBehavior = GridCellActivateAction.None;

this.gridGroupingControl1.TopLevelGroupOptions.ShowAddNewRecordBeforeDetails = false;

#region Checkbox Settings

this.gridGroupingControl1.TableControlCheckBoxClick += new Syncfusion.Windows.Forms.Grid.Grouping.GridTableControlCellClickEventHandler(gridGroupingControl1_TableControlCheckBoxClick);

#endregion

..}

{..

System.Data.DataRow row = this.dmTable.NewRow();

row[COL_SDE] = sde;

row["Select"] = checkBoxValue[1];

row[COL_Imported] = string.Empty;

row[COL_Date] = sde.GetDate();

foreach (string seriesName in seriesNames)

{

row[seriesName] = sde.GetValue(seriesName);

}

// add row to the table

this.dmTable.Rows.InsertAt(row, 0);

...}

void gridGroupingControl1_TableControlCheckBoxClick(object sender, Syncfusion.Windows.Forms.Grid.Grouping.GridTableControlCellClickEventArgs e)

{

Syncfusion.Windows.Forms.Grid.Grouping.GridTableCellStyleInfo style = (Syncfusion.Windows.Forms.Grid.Grouping.GridTableCellStyleInfo)e.TableControl.GetTableViewStyleInfo(e.Inner.RowIndex, e.Inner.ColIndex);

Record currentRecord = style.TableCellIdentity.DisplayElement.GetRecord();

// Selection added for current record

if (this.gridGroupingControl1.TableModel[e.Inner.RowIndex, e.Inner.ColIndex].Text == "False")

currentRecord.SetSelected(style.Text == "False");

}

anyway wondering if i'm doing something wrong or if syncfusion can not handle it.

Attachment: Syncfusionvideo_83efcf81.zip

[Adhikesevan Kothandaraman]

Hi James, 

Thanks for using Syncfusion products. 

To Set the record based on the selection on the check box column, Change the conditions given in the TableControlCheckBoxClick event as of follows, 

Code Snippet: 

this.gridGroupingControl1.TableControlCheckBoxClick += new GridTableControlCellClickEventHandler(gridGroupingControl1_TableControlCheckBoxClick); 

void gridGroupingControl1_TableControlCheckBoxClick(object sender, GridTableControlCellClickEventArgs e) 

{ 

    GridTableCellStyleInfo style = (GridTableCellStyleInfo)e.TableControl.GetTableViewStyleInfo(e.Inner.RowIndex, e.Inner.ColIndex); 

    Record currentRecord = style.TableCellIdentity.DisplayElement.GetRecord(); 

    currentRecord.SetSelected(style.Text == "False"); 

} 

  

Sample Link: 

https://www.syncfusion.com/downloads/support/directtrac/general/ze/SelectRecordsBasedOnCheckBox-1336532434  

 

Regards, 

Adhi  

[James]

I'm still running into an error like in the video, either the checkbox is moving or it's selecting something i'm not selecting, i'll upload another video.

Also the link you sent me also doesnt continually add rows like my version. Anyway you could get a version to continually add rows? Or can syncfusion not handle it, and the checkbox selection.

Attachment: syncvideo2_be2f6307.zip

[Adhikesevan Kothandaraman]

Hi James, 

Thanks for your update. 

We have tried to replicate the scenario with adding more number of rows in with the check box selection. Since the selection is made on the row index, the added row index collapses the selection.  

As a suggestion use the condition in the QueryCellInfo instead of the TableControCheckBoxClick event.  

Regards, 

Adhi 

[James]

Hey, 

Is there any examples doing something like this?, new to this controller.

Should I be using QueryCellInfo, or QueryCellStyleInfo?

Thank you,

James

[Adhikesevan Kothandaraman]

Hi James, 

Regret for the inconvenience caused. 

The reported scenario can be achieved by using QueryCellStyleInfo event with certain limitation. The selection can be added based on the checkbox value only on the grid is in static mode.  

When adding the new rows, you can select the checkbox values. The grid will update selected records at the end of the update. Please refer to the following code snippet, 

Code Snippet: 

 

//Set to true only on adding the new rows 

bool updating = false; 

this.gridGroupingControl1.QueryCellStyleInfo += new GridTableCellStyleInfoEventHandler(gridGroupingControl1_QueryCellStyleInfo); 

 

void gridGroupingControl1_QueryCellStyleInfo(object sender, GridTableCellStyleInfoEventArgs e) 

{ 

    if(e.Style.CellType == GridCellTypeName.CheckBox && !updating ) 

    { 

        e.Style.TableCellIdentity.DisplayElement.GetRecord().SetSelected(e.Style.Text == "True"); 

    }             

} 

 

Sample Link: 

https://www.syncfusion.com/downloads/support/directtrac/general/ze/CS609895290  

Regards, 

Adhi