i have created a dynamic table through vb.net, so htmltable, htmltablerow, htmltablecell.
I have added all style and properties in there. so eg.
dim td as htmltablecell
td.style.add("width","100px")
td.style.add("color","blue")
now what i want to do is add the tag to each row. this is because the first td of every row is a checkbox. and then textboxes follow. So when anyone clicks on the textbox, i want to checkbox to get checked.
Any idea how I can do this?
Your question is near incomprehensible, consider revising?
td.style.add("color","blue") now what i want to do is add the tag to each row
Since your table is dynamic, to add more styles and properties onto htmltablerow, you would do just as you did with your htmltablecells.
So when anyone clicks on the textbox, i want to checkbox to get checked. Any idea how I can do this?
You're looking for what is called the on_click event for the textbox. Programatically, when this event is triggered, you check your checkbox. Here's an example with a on_click in a textbox.
Related
I have a feeling this is a very simple thing that I'm overlooking.
I have two ComboBoxes that allow users to search for/select the record that they want to view. One is filled with Customer Names and the other is filled with Customer Numbers, so the user can look for a particular record by either selecting the Name or Number.
Each ComboBox is filled by a Data Table returned from a SQL Server database.
Each ComboBox has DropDownStyle set to DropDown, AutoCompleteMode set to SuggestAppend and AutoCompleteSource set to ListItems.
The user can either select by clicking the DropDown arrow and then clicking on the item they was or they can begin by typing and the ComboBox narrows the number of items in the list based on the characters the user is typing.
Using the mouse to click on the item in the list that they want works fine...it fires off a routine to retrieve the selected item from the database.
However, when the user types in the desired selection and presses ENTER, nothing happens. They must click the DropDown arrow and click on the item in order for the program to pull the appropriate record.
How do I get the ComboBox to pull the appropriate record when the user hits enter?
I'm using Visual Basic.
From the sounds of it, you need three events.
You need to use a timer to know when the user has stopped typing. To do that, you need one event would be when that field they're typing in has it's value change (<control's name>.TextChanged). That would start/restart a timer ticking (so that the user has a couple seconds to pause before the next event fires).
The next event would be the Tick event for that timer. That event would stop the timer, and then give focus to the right field so that when the user hits ENTER, they're not hitting ENTER in the field they've been typing in. You'll need to write a function to look up the right item in the ComboBox and call that.
Then you'd have a third event, either KeyPress, KeyDown, or KeyUp on the ComboBox itself. I'd lean towards the KeyUp to avoid issues if the user holds ENTER for whatever reason. That'd be what selects the item.
As a final FYI, I'm assuming you're using Visual Studio to write your code. If not, you should, and if you are/once you are, you can select the field you want to work with in the drop-down at the top left of the editor and then look at the associated events in the top right drop-down.
Thank you to JMichael for getting me on the right track with this one. I'm posting my solution here just in case it helps someone who has a similar question in the future:
The code that I added to the ComboBox's SelectionChangeCommitted event needed also to be added to the ComboBox's KeyUp event:
Private Sub cboPolicySearch_KeyUp(sended as Object, e As KeyEventArgs) Handles cboPolicySearch.KeyUp
If e.KeyCode = Keys.Enter Then
GetSelectedPolicySearchRecord()
e.Handled = True
End If
End Sub 'cboPolicySearch_KeyUp
The GetSelectedPolicySearchRecord() sub contained all of the information I needed to call my SQL Stored Procedure to select the data for the record that the user selected in the ComboBox.
Previously, this was only being called from the ComboBox's "SelectionChangeCommitted" event which is executed when the user clicks the drop down and then clicks a policy number from the drop down list.
I needed to add the same call to the GetSelectedPolicySearchRecord in the ComboBox's "KeyUp" event for when the user presses enter.
I have a form with two subforms in it in the following format:
on Subform1, Element1 has Data1. Value of Data1 points to Data1 on Subform2 which has a value of Value1
Right now both subforms are showing all data in each table. What I want to do is filter Subform2 based on the row selected in Subform1.
In this example, Element3 is selected, so the pair Data3 Value3 shows in Subform2.
I've tried accomplishing this by altering the SQL on Subform2, but nothing I do seems to do the trick. I don't know if I'm looking in the right place, or if I should look somewhere else.
If there's anything else I should provide, please don't hesitate to point it out. I want to provide enough information to come to a solution.
You can do that by changing the recordsource of Subform2 on the OnCurrent event of subform1. The steps to do that are as follows:-
Open the form in design view
Go to the properties of subform1
Go to the event tab
Select eventprocedure from the oncurrent combo
double click on the button next to the event to go to the vba window
insert the following code
Private Sub Form_Current()
Me.Parent.Subform2.Form.RecordSource = "Select data,value From TableName Where data=" & Me.Data
End Sub
Open your query for subform2 in design view. Then set the criteria to =forms![mainform]![subform1].form![element].
then in VBA you need to requery subform2 when the selected record in subform 1 is changed. Go in to the on current event of subform1 and use the following:
private sub Form_Current()
forms![mainform]![subform2].requery
end sub
N.B. you may need to change the name of mainform, subform and the column name which I called element.
Results and explanation using methods in other answers
Okay, so I ended up coming to a solution for my specific problem, and hopefully by sharing here, it will help others in the future.
The other solutions to this question assume that your form hierarchy is as follows:
MainForm->Subform1->Subform2
As in, the second subform is in and owned by the first form. This will work for most applications, but not when both Subform1 and Subform2 are Datasheets.
The hierarchy in my case, and the hierarchy for the people I hope to help in the future is as follows:
MainForm->Subform1
MainForm->Subform2
As in, the second Subform is NOT owned by the first Subform.
With this hierarchy, the code in the other solutions doesn't work, unfortunately. However, there is a simple workaround:
Use hidden textbox control as a "link" between Subform1 and Subform2
(The following method uses the example names found in my original question)
From design view, create a Text Box in the MainForm, not in the Subform1 or Subform2.
On the Property Sheet for the newly created Text Box control, under the Data tab under Property "Control Source", put the following code:
=[Subform1].[Form]![Element1]
Obviously, replace Subform1 with your first subform, and typically Element1 will be Primary Key for that table.
Next, on the Property Sheet for the Text Box control, under the Format tab change Property "Visible" to No.
Next, we're going to change the "Link Master Fields" and "Link Child Fields" properties on Subform2, which can be found on the Data tab of the Property Sheet:
For the "Link Master Fields" property, put in the Name of the Text Box control you made. An example of a default name will be Text5. I renamed my Text Box to CurrentElementKey, but name it whatever you want. So in my "Link Master Fields" property, I put CurrentElementKey.
For the "Link Child Fields" property, since we put the Primary Key for Subform1 in the Text Box, we need to put the Foreign Key it relates to in Subform2. I can't tell you exactly what this will look like, because it will vary for your scenario. For example, you might have had Element1 be Element1PK on the first Subform, and it's Foreign Key on Subform2 as Element1FK. So you'd put Element1FK in "Link Child Fields".
If you have any questions, or require further explanation, please comment on this answer, and I'll do my best to help.
I have a standard form in MS-Access which lists a bunch of orders, and each row contains order no, customer, etc fields + a button to view notes and attached document files.
On request from our customer we should gray out the button btnAnm (or check or uncheck a checkbox) depending on a calculation from two queries to two other tables (a SELECT COUNT WHERE and a check if a text field is empty).
I've tried btnAnm_BeforeUpdate(...) and btnAnm_BeforeRender(...) and put breakpoints in the subs, but none of them trigger. The same if I use the control Ordernr instead of btnAnm.
I'd like a function in the Detail VBA code to be triggered for each "Me." (row) so to speak, and set the row's control's properties in that sub.
What do I do? I've looked at the help file and searched here.
*Edit: So I want to do something that "isn't made to work that way"? Ie. events are not triggered in Details.
As an alternative, could I base the value of a checkbox on each line on a query based on the 'Ordernr' field of the current row and the result of a SELECT COUNT from another table and empty field check?
Do I do this in the query the list is based on, or can I bind the extra checkbox field to a query?
A description of how to do this (combine a COUNT and a WHERE "not empty" to yes/no checkbox value) would be perfectly acceptable, I think! :)*
You cannot do much with an unbound control in a continuous form, anything you do will only apply to the current record. You can use a bound control with a click event so that it acts like a button.
Presumably the related documents have a reference to the order number that appears on your form, which means that you can create a control, let us call it CountOrders, with a ControlSource like so:
=DCount("OrderID","QueryName","OrderID=" & [OrderID])
The control can be hidden, or you can set it up to return true or False for use with a textbox, you can also use it for Conditional Formatting, but sadly, not for command buttons.
Expression Is [CountOrders]>0
You can also hide the contents and add a click event so that is acts in place of the command button. Conditional Formatting will allow you to enable or disable a textbox.
As I understand your question, you have a continuous form with as command button that appears on each row - and you'd like to enable/disable the button conditionally depending on the contents of the row.
Unfortunately you can't do that. It seems that you can't reference the individual command buttons separately.
Having wanted to do something similar in the past I came up with two alternate ways of setting up my interface.
Put a trap into the onClick code for the Button. Which is icky, because it is counter intuitive to the user. But it gets you that functionality now.
Move the command button (and editable fields) up into the form header, and make the rows read only. Your users then interact with the record only in the header, and select the record they want work with in the list below. As I recall this is known a Master-Detail interface.
I am new to vb.net and I am using visual studio 2010. I have two comboboxes on a form, each combobox is set to DropDownList so that a list of items can show in the combobox, but no text is allowed to be entered.
For combobox A, if user chooses item 1, the list of combobox B should be updated accordingly. I think this is quite common on a lot of applications. But I do not know to implement it. I even do not know the keyword to search for the relevant property or event handler.
Thanks a lot!
Take a look at SelectedValueChanged. You can subscrive to this event on your first combobox, then when the event is raised, you can combo2.Items.Clear () the 2nd collection, then add your items.
I want to make custom combo box which have contain datagrid and textbox too.
On clicks into combo box datagridview should be appear and selecting any row particular cell value of the datagridview added on the combo.
thanks in advance..
As your question is written I have no idea how to answer it, I can't figure out how you could sensibly show a DataGridView inside a ComboBox. I'm writing this answer with the assumption that you mean that the form should have a ComboBox that are "linked" to a DataGridView rather than actually contain it.
If so, all you need to do is to add the ComboBox and DataGridView to the form, make the DataGridView invisible. Then you handle the SelectedIndexChanged event for the ComboBox, in the handler, make the grid visibile, find the index of the row and column you want to show and write code like (code not tested so might not be correct):
grid.SelectedRows.Clear()
grid.FirstDisplayedScrollingRowIndex = rowIndex
grid.Rows(rowIndex).Cells(colIndex).Selected = True
grid.Show()