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
Related
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?
I want to display data. I used AfterFieldChange method to display the data but it turns out the radio button doesn't change. I already insert the data customer table, the BAQ (Business Activity Query) also work just that the screen form doesn't work.
private void UD24_AfterFieldChange(object sender, DataColumnChangeEventArgs args)
{
// ** Argument Properties and Uses **
// args.Row["FieldName"]
// args.Column, args.ProposedValue, args.Row
// Add Event Handler Code
//EpiDataView edvUD24 = ((EpiDataView)(this.oTrans.EpiDataViews["UD24"]));
//System.Data.DataRow edvUD24Row = edvUD24.CurrentDataRow;
EpiDataView view = oTrans.EpiDataViews["UD24"] as EpiDataView;
switch (args.Column.ColumnName)
{
case "Character03":
DataTable tblcust=customer(args.Row["Character03"].ToString());
if(tblcust!=null && tblcust.Rows.Count>0)
{
string client = tblcust.Rows[0]["Customer_client1_c"].ToString();
view.dataView[view.Row]["ShortChar04"] = client;
//MessageBox.Show(Client);
}
break;
}
}
After changing the data in the EpiDataView you need to call Notify to make it call the UI elements that need to be updated:
view.dataView[view.Row]["ShortChar04"] = client;
view.Notify(new Ice.Lib.Framework.EpiNotifyArgs(this, view.Row, NotifyType.Initialize));
Kieym, perhaps try adding EpiNotifyArgs into your declaration, like so:
private void UD24_AfterFieldChange(object sender, DataColumnChangeEventArgs args, EpiNotifyArgs args)
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 have done grouping of the grid by giving groupindex to a particular column in aspxgridview.
For example, if I am grouping by means of persons name and the orders details made by that particular person would come in the detailed content when the arrow is clicked to view the content.
When I click on the header fields to sort, it is sorting the data inside the groupContent but it is not used for sorting the data of groupsummary
I am showing all the totals as a part of group summary besides the person's name.
For example if you see in the below link:
https://demos.devexpress.com/ASPxGridViewDemos/Summary/GroupSortBySummary.aspx
If you sort by company name, the content would be sorted, but the summary showing the country and sum has no means to get sorted at outside level.
Please do suggest me options to work out this problem.
Thanks.
Here is workaround, based on this example.
The main idea is to create summary item which shows the minimum or maximum value of Country column inside City group and sort City group by this summary values. For this BeforeColumnSortingGrouping event is used to change the sorting behavior.
Here is example:
<dx:ASPxGridView ...
OnBeforeColumnSortingGrouping="gridCustomers_BeforeColumnSortingGrouping">
private void SortByCountry()
{
gridCustomers.GroupSummary.Clear();
gridCustomers.GroupSummarySortInfo.Clear();
var sortOrder = gridCustomers.DataColumns["Country"].SortOrder;
SummaryItemType summaryType = SummaryItemType.None;
switch (sortOrder)
{
case ColumnSortOrder.None:
return;
break;
case ColumnSortOrder.Ascending:
summaryType = SummaryItemType.Min;
break;
case ColumnSortOrder.Descending:
summaryType = SummaryItemType.Max;
break;
}
var groupSummary = new ASPxSummaryItem("Country", summaryType);
gridCustomers.GroupSummary.Add(groupSummary);
var sortInfo = new ASPxGroupSummarySortInfo();
sortInfo.SortOrder = sortOrder;
sortInfo.SummaryItem = groupSummary;
sortInfo.GroupColumn = "City";
gridCustomers.GroupSummarySortInfo.AddRange(sortInfo);
}
protected void Page_Load(object sender, EventArgs e)
{
SortByCountry();
}
protected void gridCustomers_BeforeColumnSortingGrouping(object sender, ASPxGridViewBeforeColumnGroupingSortingEventArgs e)
{
SortByCountry();
}
When you group by a column devexpress automatically uses that column to sort. Without sorting the data the grouping is not possible. To overcome this issue we have sorted the datasource itself then applied that datasource to the grid.
I'm using Visual Studio 2010 and i'm developing a windows form. Right now I'm using a data grid view and i want to write some functions that would allow you to automaticlly edit the datagrid by just changing the text in the Datagrid view. Right now, I am able to get the actual value but I need the value of the column in order to use it as a parameter when i use ADO.net here's what my code looks like now
private void dgv_DataLookup_CellValueChanged(object sender, DataGridViewCellEventArgs e)
{
DialogResult dr;
dr = MessageBox.Show("Are you sure you want to edit this field?", "Edit Cell", MessageBoxButtons.YesNo);
if (dr == DialogResult.Yes)
{
DataGridViewCell editItemCell = dgv_DataLookup[dgv_DataLookup.CurrentCell.RowIndex, dgv_DataLookup.CurrentCell.ColumnIndex];
string editItem = editItemCell.Value.ToString();
}
}
this here gets me the value of the current cell that is currently selected. I tried doing something like this
DataGridViewColumns columnCells = dgv_DataLookup.CurrentCell.ColumnIndex.Value.ToString()... something that would represent this but actual code. thanks!
According to what I understand you want to edit the value within a field, you can choose the value in this way.
private void button2_Click(object sender, EventArgs e)
{
if (MessageBox.Show("Are you sure you want to edit this field?",Application.ProductName.ToString(),MessageBoxButtons.YesNo)== DialogResult.Yes)
{
string editItem = this.dataGridView1.Rows[this.dataGridView1.CurrentRow.Index].Cells["NameField"].Value.ToString();
}
}
Bye