Derived from Jeff S's methodology found here, I can add a "Checkbox" to a PDF page like so:
PdfPTable tblFirstRow = new PdfPTable(5);
tblFirstRow.SpacingBefore = 4f;
tblFirstRow.HorizontalAlignment = Element.ALIGN_LEFT;
. . . // code where textboxes are added has been elided for brevity
PdfPCell cell204Submitted = new PdfPCell()
{
CellEvent = new DynamicCheckbox("checkbox204Submitted", "204 Submitted or on file")
};
tblFirstRow.AddCell(cell204Submitted);
doc.Add(tblFirstRow);
The DynamicCheckbox class, based on Jeff S's CustomCellLayout class, is:
public class DynamicCheckbox : IPdfPCellEvent
{
private string fieldname;
private string cap;
public DynamicCheckbox(string name, String caption)
{
fieldname = name;
cap = caption;
}
public void CellLayout(PdfPCell cell, Rectangle rectangle, PdfContentByte[] canvases)
{
PdfWriter writer = canvases[0].PdfWriter;
RadioCheckField ckbx = new RadioCheckField(writer, rectangle, fieldname, "Yes");
ckbx.CheckType = RadioCheckField.TYPE_CHECK;
ckbx.Text = cap;
PdfFormField field = ckbx.CheckField;
writer.AddAnnotation(field);
}
}
My problem is that the checkbox's text (the string assigned to ckbx.Text) is not displaying. The checkbox (outsized) occupies the last cell in the table row, but there is no (visible) accompanying text.
What's missing from my code?
Note: I tried to reduce the size of the checkbox by doing this:
Rectangle tangle = new Rectangle(20, 20);
//RadioCheckField ckbx = new RadioCheckField(writer, rectangle, fieldname, "Yes");
RadioCheckField ckbx = new RadioCheckField(writer, tangle, fieldname, "Yes");
...but that attempt failed - with that code, I can't even "find" the checkbox in the generated PDF file - clicking willy-nilly in column 5 conjures up no checkbox...
Others have answered the label part. The Rectangle that you have called "tangle" needs to be calculated off of the rectangle that comes into the event handler, similar to
Rectangle tangle = new Rectangle(
rectangle.Left,
rectangle.Top - PDFStyle.boxsize - 4.5f,
rectangle.Left + PDFStyle.boxsize,
rectangle.Top - 4.5f
);
Where PDFStyle.boxsize is the width/height of the checkbox and 4.5f is the padding the edge of the cell. Basically the rectangle isn't relative to the cell, but absolute to the page.
As described in ISO-32000-1, a check box is a field of type Button. If you define text for a button, you want to define the text that is displayed on the button. However: in the case of a check box, there is no such text! Instead, you have two appearances, one for the Off value and one for the Yes value.
An educated guess made by an attentive reader would be that you don't want to add text (to the button), but that you want to add a label (for a checkbox). Again you should consult ISO-32000-1 and you'll discover that the spec doesn't say anything about labels for check boxes. The concept just doesn't exist at the level of an AcroForm.
This doesn't mean the concept doesn't exist in general. Many PDF tools allow you to define check boxes that are preceded by a label. When you look inside the PDF, you'll discover that this label is just part of the content, whereas the check box is represented by a widget orientation.
Let's take a look at the official documentation instead of frustrating ourselves searching on every place of the web except on the official web site. More specifically: let's take a look at the Buttons example from Chapter 7 of my book. You'll see that one can set text for a real button:
PushbuttonField button = new PushbuttonField(writer, rect, "Buttons");
button.setText("Push me");
This isn't possible with check boxes (for the obvious reason that the appearance of a check box is completely different). If we want to add a label, we can add it for instance like this:
checkbox = new RadioCheckField(writer, rect, LANGUAGES[i], "Yes");
field = checkbox.getCheckField();
field.setAppearance(PdfAnnotation.APPEARANCE_NORMAL, "Off", onOff[0]);
field.setAppearance(PdfAnnotation.APPEARANCE_NORMAL, "Yes", onOff[1]);
writer.addAnnotation(field);
ColumnText.showTextAligned(canvas, Element.ALIGN_LEFT,
new Phrase(LANGUAGES[i], font), 210, 790 - i * 40, 0);
You can find the C# version of these examples here: http://tinyurl.com/itextsharpIIA2C07
Creating a checkbox, and then accompanying text to its right, can be done like this:
PdfPCell cell204Submitted = new PdfPCell()
{
CellEvent = new DynamicCheckbox("checkbox204Submitted")
};
tblFirstRow.AddCell(cell204Submitted);
// . . . Chunks and an anchor created; that code has been elided for brevity
Paragraph parCkbxText = new Paragraph();
parCkbxText.Add(Chunk204SubmittedPreamble);
parCkbxText.Add(ChunkBoldNote);
parCkbxText.Add(Chunk204Midsection);
parCkbxText.Add(anchorPayeeSetup204);
PdfPCell cellCkbxText = new PdfPCell(parCkbxText);
cellCkbxText.BorderWidth = PdfPCell.NO_BORDER;
tblFirstRow.AddCell(cellCkbxText);
public class DynamicCheckbox : IPdfPCellEvent
{
private string fieldname;
public DynamicCheckbox(string name)
{
fieldname = name;
}
public void CellLayout(PdfPCell cell, Rectangle rectangle, PdfContentByte[] canvases)
{
PdfWriter writer = canvases[0].PdfWriter;
RadioCheckField ckbx = new RadioCheckField(writer, rectangle, fieldname, "Yes");
ckbx.CheckType = RadioCheckField.TYPE_CHECK;
ckbx.BackgroundColor = BaseColor.ORANGE;
ckbx.FontSize = 6;
ckbx.TextColor = BaseColor.WHITE;
PdfFormField field = ckbx.CheckField;
writer.AddAnnotation(field);
}
}
I am programmatically updating my WinForm DataGridView
Problem, DataGridViewCheckBoxCell doesn't get updated !!!
I was google, it seams like knowing case but whatever I've tried did not help yet.
private void InitializeFunctionsDataGrid()
{
System.Data.DataSet ds = func.GetFunctions();
this.FunctionsDataGrid.DataSource = ds.Tables[0];
this.FunctionsDataGrid.Columns["FunctionId"].Visible = false;
this.FunctionsDataGrid.Columns["DESCRIPTION"].Width = 370;
DataGridViewCheckBoxColumn column = new DataGridViewCheckBoxColumn();
column.Name = "enable";
column.HeaderText = "enable";
column.FalseValue = 0;
column.TrueValue = 1;
FunctionsDataGrid.Columns.Add(column);
foreach(DataGridViewRow row in FunctionsDataGrid.Rows)
{
(( DataGridViewCheckBoxCell)row.Cells["enable"]).Value = 1;
}
FunctionsDataGrid.CurrentCell = null;
}
enable is an unbound column. This means that you need to provide cell value yourself.
You can set the VirtualMode property to true and handle the CellValueNeeded event.
If you want to enable the user to check a cell then you need to handle the CellValuePushed event.
DataGridView samples that are part of the DataGridView FAQ has a specific example of an unbound checkbox column along with databound columns.
OK basically easiest way for me was to work with datasource.
I've add the column to the DataTable and fill it with data.
And then last thing this.FunctionsDataGrid.DataSource = ds.Tables[0];
I need an XtraGrid control that has GridLookupEdit to enter column values.
What I managed to do so far:
1) I have configured XtraGrid control
columns: ID, Name, Number
in-place GridLookUp Editors for Name and Number columns
2) on the form Load event I load data from database and set XtraGrid datasource and both repositoryItem(..) datasource, valuemember and displaymember
a) Data are loaded in XtraGrid, I can activate cell but can not choose values from dropdown (from repositoryItem(..)) or enter values manually (i can activate cell in "*" new row but it has the same problem - can not choose from the dropdown or enter values manually) => why?
b) If I don't set datasource for XtraGrid, then both dropdown's are active and i can select values using GridLookupEdit, but when i exit the cell, the cell gets cleared => i believe this is because in this case no xtraGrid.DataSource is set?
var model = (from TableA a in _dbE.TableA select new {ID, Name, Number}).ToList();
//if i comment this line out, then i can choose values from GridLookUpEdit
gridControl1.DataSource = model;
repositoryItemNosaukums.DataSource = model;
repositoryItemNosaukums.ValueMember = "ID";
repositoryItemNosaukums.DisplayMember = "Name";
repositoryItemPieteikumaNr.DataSource = model;
repositoryItemPieteikumaNr.ValueMember = "ID";
repositoryItemPieteikumaNr.DisplayMember = "Number";
What am I missing?
The problem was, that my data source "model" was a List, but it should have been BindingList with properties AllowNew==True and AllowEdit==True.
After DevExpress support asked if the data source is read only, i found this post which finally opened my eyes:
A Problem in DataGridView : datagridview seems readonly to user (WinForms)
correct version of code
//no projections (select new ...) for IBindingList<T>..
//var model = (from TableA a in _dbE.TableA select new {ID, Name, Number}).ToList();
var model = (from TableA a in _dbE.TableA).ToList();
//convert to BindingList
var bindingModel= new BindingList<TableA>(model);
bindingModel.AllowNew=true;
bindingModel.AllowEdit=true;
//bind BindingList to datagrid
gridControl1.DataSource = bindingModel; //model;
//... no changes to repositoryItem(..) stuff
repositoryItemNosaukums.DataSource = model;
repositoryItemNosaukums.ValueMember = "ID";
repositoryItemNosaukums.DisplayMember = "Name";
repositoryItemPieteikumaNr.DataSource = model;
repositoryItemPieteikumaNr.ValueMember = "ID";
repositoryItemPieteikumaNr.DisplayMember = "Number";
I've read all the similiar posts about this darn control (DataGridViewComboBoxCell) and setting it's value programmatically but implementing all the suggestions hasn't worked. I could probably change the UI to get around this problem but I don't like to be beat!
private void PopulateAreaForRoleAssociation()
{
// If businessRoleList is null then no data has been bound to the dgv so return
if (businessRoleList == null)
return;
// Ensure businessArea repository is instantiated
if (businessAreaRepository == null)
businessAreaRepository = new BusinessAreaRespository();
// Get a reference to the combobox column of the dgv
DataGridViewComboBoxColumn comboBoxBusinessAreaColumn = (DataGridViewComboBoxColumn)dgvBusinessRole.Columns["BusinessArea"];
// Set Datasource properties to fill combobox
comboBoxBusinessAreaColumn.DisplayMember = "Name";
comboBoxBusinessAreaColumn.ValueMember = "Id";
comboBoxBusinessAreaColumn.ValueType = typeof(Guid);
// Fill combobox with businessarea objects from list out of repository
comboBoxBusinessAreaColumn.DataSource = businessAreaRepository.GetAll();
// loop through the businessRoles list which the dgv is bound to and get out each dgv row based upon the current id in the loop
businessRoleList.Cast<BusinessRole>().ToList().ForEach(delegate(BusinessRole currentRole)
{
DataGridViewRow currentRowForRole = dgvBusinessRole.Rows.Cast<DataGridViewRow>().ToList().Find(row => ((BusinessRole)row.DataBoundItem).Id == currentRole.Id);
// Get a reference to the comboBox cell in the current row
DataGridViewComboBoxCell comboBoxCell = (DataGridViewComboBoxCell)currentRowForRole.Cells[2];
// Not sure if this is necessary since these properties should be inherited from the combobox column properties
comboBoxCell.DisplayMember = "Name";
comboBoxCell.ValueMember = "Id";
comboBoxCell.ValueType = typeof(Guid);
// Get the business area for the current business role
BusinessArea currentAreaForRole = businessAreaRepository.FetchByRoleId(currentRole.Id);
// if the role has an associated area then set the value of the cell to be the appropriate item in the combobox
// and update the cell value
if (currentAreaForRole != null)
{
foreach (BusinessArea area in comboBoxCell.Items)
{
if (currentAreaForRole.Id == area.Id)
{
comboBoxCell.Value = area.Id;
dgvBusinessRole.UpdateCellValue(2, comboBoxCell.RowIndex);
}
}
}
});
}
The dgv is first bound to a binding list holding BusinessRole objects, then the combobox column is bound to a basic list of BusinessArea objects that come out of a repository class. I then loop through the bindinglist and pull out the row of the dgv that is bound to the current item in the bindinglist loop.
With that row I make a database call to see if the BusinessRole entity is associated with a BusinessArea entity. If it is then I want to select the item in the combobox column that holds the BusinessAreas.
The problem is that when the grid is loaded, all the data is there and the comboboxes are populated with a list of available areas, however any values that are set are not displayed. The code that sets the value is definately getting hit and the value I am setting definately exists in the list.
There are no data errors, nothing. It's just refusing to update the UI with the value I programmatically set.
Any help would be greatly appreciated as always.
Thanks
This code works for my first combo box I have in my row with the following code, but I try it with the next one in the row and it doesn't work. I could use the help with the rest I have 3 more to do. I do set the combo boxes on a second form from this form with the same code as is on the last line of the try block but using the cell information instead of the dataset
try
{
string strQuery = "select fundCode from vwDefaultItems where IncomeType = '" + stIncome + "'";
SqlDataAdapter daDefault = new SqlDataAdapter(strQuery, conn);
DataSet dsDefault = new DataSet();
daDefault.Fill(dsDefault);
strDefFund = dsDefault.Tables[0].Rows[0].ItemArray[0].ToString();
dgvCheckEntry.Rows[curRow].Cells[7].Value = dsDefault.Tables[0].Rows[0].ItemArray[0].ToString();
}
catch (Exception eq)
{
}
How can I add a hyperlink column for a Winforms DataGrid control?
Right now I am adding a string column like this
DataColumn dtCol = new DataColumn();
dtCol.DataType = System.Type.GetType("System.String");
dtCol.ColumnName = columnName;
dtCol.ReadOnly = true;
dtCol.Unique = false;
dataTable.Columns.Add(dtCol);
I just need it to be a hyperlink instead of a String. I am using C# with framework 3.5
Use a DataGridViewLinkColumn.
The link shows an example of setting up the column and adding it to a DGV::
DataGridViewLinkColumn links = new DataGridViewLinkColumn();
links.UseColumnTextForLinkValue = true;
links.HeaderText = ColumnName.ReportsTo.ToString();
links.DataPropertyName = ColumnName.ReportsTo.ToString();
links.ActiveLinkColor = Color.White;
links.LinkBehavior = LinkBehavior.SystemDefault;
links.LinkColor = Color.Blue;
links.TrackVisitedState = true;
links.VisitedLinkColor = Color.YellowGreen;
DataGridView1.Columns.Add(links);
You'll probably be interested in this example that shows how the snippet above fits into a more complete example of configuring DGV columns at runtime.