I am using table adapter in my WinForms application to load data from database to gridview. Things work fine except I need to set one field value to be updated too in the database.
Here is my code:
//Fill dataset from database:
attendanceTypeTableAdapter.Fill(dsDataset.attendanceType);
//add rowUpdating event
attendanceTableAdapter.Adapter.RowUpdating += new OleDbRowUpdatingEventHandler(tableAdapter_RowUpdating);
Set modifiedBy field before query executed against database
private void tableAdapter_RowUpdating(object sender, OleDbRowUpdatingEventArgs e)
{
if (e.Status == UpdateStatus.Continue && e.StatementType == StatementType.Update)
{
//set modifiedBy field to current userId
e.Row["modifiedBy"] = globals.userId;
e.Row.AcceptChanges();
}
}
'modifiedBy' field using above code appears in the gridview but unfortunately does not get updated in the database!
What am I missing here?
Related
I have a use case where I have created a view object that contains 3 values namely LOC_CODE, LOC_DESC, CITY_DESC. Now in my ADF form I would like to display all 3 values in such a way so that user would have a provision to select LOC_CODE From Popup(LOV) and rest two fileds LOC_DESC & CITY_DESC should be changed accordingly. Currently the popup shows all 3 values but when I select the row and click on OK button it only fills the LOC_CODE in 1 textbox.
Below is the scenario of the same:
Got the solution. Just need to add a textbox or drag and drop near respective field and bind it with required binding object. For e.g. in this case LOC_DESC & CITY_DESC is available in my data control as DefLoc & DefCity that contains SQL to fetch respective description value. Now I need to drag and drop DefLoc & DefCity and binding is automatically done or just check binding in value.
you have to add valuechangelistener to location code. set autosubmit true.
now in backing bean use following code:
public void valuechangelistener(ValueChangeEvent valueChangeEvent) {
valueChangeEvent.getComponent().processUpdates(FacesContext.getCurrentInstance());
BindingContext bctx = BindingContext.getCurrent();
BindingContainer bindings = bctx.getCurrentBindingsEntry();
JUCtrlListBinding list = (JUCtrlListBinding)bindings.get("LOC_CODE");
String selectedValue = (String)list.getAttributeValue();
list.getListIterBinding().setCurrentRowWithKeyValue(selectedValue);
Row currRow = list.getListIterBinding().getCurrentRow();
if (currRow != null) {
bndloc_desc.setValue(currRow.getAttribute("LOC_DESC"));
bndcity_desc.setValue(currRow.getAttribute("CITY_DESC"));
}
}
now set partial trigger to both location desc and city desc with id of LOC_CODE.
After doing this you will get your desired result.
update after implementing it.
In my case JDeveloper 12.2.1.3.0
public void valueChangeListener(ValueChangeEvent valueChangeEvent) {
BindingContext bctx = BindingContext.getCurrent();
BindingContainer bindings = bctx.getCurrentBindingsEntry();
JUCtrlListBinding list = (JUCtrlListBinding) bindings.get("YourBindingforLOV");
String selectedValue = (String) valueChangeEvent.getNewValue();
list.getListIterBinding().setCurrentRowWithKeyValue(selectedValue);
Row currRow = list.getListIterBinding().getCurrentRow();
if (currRow != null) {
String s = (String) currRow.getAttribute("YourAttributeName");
}
}
I have a telerik radgrid where columns and detail tables are declared like:
<telerik:RadGrid>
<Columns>
<telerik:GridBoundColumn/>
<telerik:GridBoundColumn/>
</Columns>
<DetailTables>
<telerik:GridTableView
<Columns>
<telerik:GridBoundColumn/>
<telerik:GridBoundColumn/>
</Columns>
</telerik:GridTableView
</DetailTables>
</telerik:RadGrid>
Which gives a nested grid like this:
Now, what I want is to be able to specify a detail table (those sub tables) per row, programmatically.
(I cannot be sure that the columns for the nested table that comes up when I expand the line fgvbvb will be the same as the columns when expanding the line xcxcv).
I have tried, without luck in the OnDataBound handler of the radgrid (in which I omitted <DetailTables>) to access the data structure for nested tables like this:
protected void OnRadGridDataBound(object sender, EventArgs e)
{
foreach (GridDataItem item in grdActivitiesToCopy.MasterTableView.Items)
{
var dg = item.ChildItem.NestedTableViews[0];
}
}
This will overindex the array NestedTableViews because it is empty. Also, item.ChildItem.NestedTableViews has no setter.
How do I populate each row with a detail table one by one manually?
According to Telerik:
RadGrid does not support mixing declarative grid columns with grid
columns added dynamically at runtime. You should either create all the
columns in the grid programmatically, or else define them all in the
ASPX file. When creating Detail tables, it should be created in the
PageInit event.
Creating a Hierarchical Grid Programmatically:
You should follow these basic steps in order to create hierarchical
RadGrid programmatically in the code-behind (having a data source
control for data content generation):
Create the grid dynamically in the Page_Init handler of the page by
calling its constructor.
Specify the preferred settings for your grid instance through its
properties.
Create columns for the grid dynamically. Keep in mind that you have to
first set their properties and then add them to the
MasterTableView/GridTableView collection (discussed in the first
paragraph of this same topic). Thus, their ViewState will be properly
persisted (as LoadViewState is raised after the Init event of the
page).
Set the proper ParentTableRelations for the GridTableViews (along with
their MasterKeyField and DetailKeyField attributes) and DataKeyNames
for the MasterTableView/GridTableViews in the code-behind of the page.
Assign data sources (through the DataSourceID attribute) for each
table in the grid hierarchy.If you do not want to use declarative
relations, generate the data in the NeedDataSource/DetailTableDataBind
handlers of the grid. On DetailTableDataBind you can determine which
data source should be related to the currently bound GridTableView by
checking its Name/DataSourceID property. Here, the Name property must
have a unique value for each detail table (this value has to be
defined previously by the developer) and the DataSourceID is the ID of
the DataSource control responsible for the corresponding detail table
content generation.
Code Sample:
RadGrid RadGrid1 = new RadGrid();
RadGrid1.DataSourceID = "SqlDataSource1";
RadGrid1.MasterTableView.DataKeyNames = new string[] { "CustomerID" };
RadGrid1.Skin = "Default";
RadGrid1.Width = Unit.Percentage(100);
RadGrid1.PageSize = 15;
RadGrid1.AllowPaging = true;
RadGrid1.AutoGenerateColumns = false;
//Add columns
GridBoundColumn boundColumn;
boundColumn = new GridBoundColumn();
boundColumn.DataField = "CustomerID";
boundColumn.HeaderText = "CustomerID";
RadGrid1.MasterTableView.Columns.Add(boundColumn);
boundColumn = new GridBoundColumn();
boundColumn.DataField = "ContactName";
boundColumn.HeaderText = "Contact Name";
RadGrid1.MasterTableView.Columns.Add(boundColumn);
//Detail table - Orders (II in hierarchy level)
GridTableView tableViewOrders = new GridTableView(RadGrid1);
tableViewOrders.DataSourceID = "SqlDataSource2";
tableViewOrders.DataKeyNames = new string[] { "OrderID" };
GridRelationFields relationFields = new GridRelationFields();
relationFields.MasterKeyField = "CustomerID";
relationFields.DetailKeyField = "CustomerID";
tableViewOrders.ParentTableRelation.Add(relationFields);
RadGrid1.MasterTableView.DetailTables.Add(tableViewOrders);
Please refer to this help article for more details:
http://docs.telerik.com/devtools/aspnet-ajax/controls/grid/defining-structure/creating-a-radgrid-programmatically#creating-a-hierarchical-grid-programmatically
First of all , because of the life cicle of a asp page. You can't access to a event on a detail table.
If you need to access detail tables , items etc ..
You need to add an method to the PreRender in the MasterTableView like this:
<MasterTableView DataSourceID="myDataSource"
AllowMultiColumnSorting="True"
DataKeyNames="Key1,Key2,KeyN"
HierarchyDefaultExpanded="True"
OnPreRender="Unnamed_PreRender" >
The method will recursively iterate through the grid.
The way you do it can change depending on your HieararchyLoadMode.
So this is my way to do it, easiest way exist if you are on Client or Serverbind mode.
Traversing and load mode by the telerik doc .
I'm pretty sure you don't want to :
"populate each row with a detail table one by one manually"
You want to have Multiple table at a Sub Level in your grid and display the rigth one programmatically.
And this is can be done in two easy step:
1/. Create every Detail table in your apsx page.
Please refer to this documentation for more information :
Several tables at a level
2/. Handle the display:
protected void Unnamed_PreRender(object sender, EventArgs e)
{
if (!IsPostBack) myControler(MASTERGRID.MasterTableView);
}
private void myControler(GridTableView gridTableView)
{
GridItem[] nestedViewItems = gridTableView.GetItems(GridItemType.NestedView);
foreach (GridNestedViewItem nestedViewItem in nestedViewItems)
{
foreach (GridTableView nestedView in nestedViewItem.NestedTableViews)
{
if (nestedView.Name == "mytable12" && nestedView.Items.Count == 0)
{ HideExpandColumn(nestedView, nestedView.ParentItem["ExpandColumn"]); }
else if (nestedView.Name == "mytable23")
{
if (nestedView.Items.Count == 0)//
HideExpandColumn(nestedView, nestedView.ParentItem["ExpandColumn"]);
else
{ }
}
if (nestedView.HasDetailTables)
{ myControler(nestedView); }
}
}
}
private void HideExpandColumn(GridTableView _GNVI, TableCell _cell)
{
if (_cell.Controls.Count > 0)
{
_cell.Controls[0].Visible = false;
_cell.Text = " ";
}
_GNVI.Visible = false;
}
You can hide a detail table using :
HideExpandColumn(nestedView, nestedView.ParentItem["ExpandColumn"]);
Or you can hide the parent of the detail table you tested using the detail table that is in param of the controler :
HideExpandColumn(gridTableView, nestedView.ParentItem["ExpandColumn"]);
HideExpandColumn will hide the expand control that stay sometimes even if you hide th detail table.
Bonus: If you need to access to a control in a detail table.
You can use this:
public static class ControlExtensions
{
public static Control FindIt(this Control control, string id)
{
if (control == null) return null;
Control ctrl = control.FindControl(id);
if (ctrl == null)
{
foreach (Control child in control.Controls)
{
ctrl = FindIt(child, id);
if (ctrl != null) break;
}
}
return ctrl;
}
}
Calling it in your controler like this :
else if (nestedView.Name == "DetailPV")
{
if (nestedView.Items.Count == 0)
HideExpandColumn(gridTableView, nestedView.ParentItem["ExpandColumn"]);
else
{
RadLabel ctrl = (RadLabel)this.FindIt("RadLabel11");
ctrl.Text += "<b>" + nestedView.Items.Count.ToString() + "</b>";
}
I am having trouble that RadFilter is not detecting the columns correctly. I bind my RadGrid through code in Asp like:
RadGrid1.DataSource = myDataSource;
RadGrid.DataBind();
RadFilter is only binding those columns which are bind through and ignoring those who are in . Is this a known issue? as I didn't see any thread talking about this problem. Waiting for help immediately.
Regards,
Wasim.
If I am understanding you correctly, you need to add FilterFieldEditors to the RadFilter for any field that is not represented in the DataSource for the grid.
You can add filters dynamically with the following code.
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
if (!IsPostBack)
{
var fieldName = "myDynamicFilterField";
var friendlyName = "Friendly Dynamic Field";
var newTextFieldEditor = new RadFilterTextFieldEditor();
filter.FieldEditors.Add(newTextFieldEditor);
newTextFieldEditor.FieldName = fieldName; // name filter will used for filter exressions
newTextFieldEditor.DisplayName = friendlyName; // name use will see when they selected a field to filter
// ** Repeat for all dynamic fields **
}
}
I was able to get a working version using auto generated columns and custom added columns, but ran into many other problems. I ended up just dynamically creating all the filter fields (as shown above) from the data source and applying the filter expression to the grid.
How do I show a custom message in the table wizard when table has no data. I am working with Telerik Reports Q1 2011.
There is NoDataMessage property of table item. You can add epression and the message will be displayed. Also, you can give styling to NoDataMessage. Or go to itemdatabound event of table item and then set the value for no data message.
private void table1_ItemDataBound(object sender, EventArgs e)
{
//Take the Telerik.Reporting.Processing.DataItem instance
Telerik.Reporting.Processing.Table tbl = Telerik.Reporting.Processing.DataItem)sender;
//Check if data is retrieved by graph or not.
if (table1.Items.Count == 0)
{
//If no data retrieved, then set the NoDataMessage property.
tbl.NoDataMessage = "No Data Found";
}
}
Link:
http://www.telerik.com/help/reporting/report-structure-dataitem-set-no-data-message.html
I am trying to insert DataTable into a DB table (the DB is on a mobile device - Psion), using a DataAdapter. from some reason, it does not work - when i check the DB table - it simply appears as an empty table...
the code:
>
private void btnCommTables_Click(object sender, EventArgs e)
{
try
{
DataSet ds = WSDanielGroup.Instance._WSDanielGroupToDevice.GetLoadTables();
DataTable DT = ds.Tables["Peer"];
string SelectCMD = "INSERT INTO Peer(ID,PeerID) Values(?,?)";
SqlCeConnection cn = new SqlCeConnection(DBManager.sLocalConnectionString);
SqlCeDataAdapter da=new SqlCeDataAdapter();
da.InsertCommand = new SqlCeCommand(SelectCMD, cn);
cn.Open();
da.InsertCommand.Parameters.Add("#ID", SqlDbType.Int,4,"ID");
da.InsertCommand.Parameters.Add("#PeerID", SqlDbType.NVarChar,50, "PeerID");
int numRows = da.Update(DT);
}
One possible explanation is that your DataTable doesn't have the correct RowVersions. The DataAdapter will only update rows that have been changed in the table. If you get it from somewhere else, it thinks everything's OK and nothing needs to be updated (rows not marked "dirty"). More info here.