I am using DevExpress GridControl to display information from my database through a stored procedure (ie. SELECT * FROM aTable). Unfortunately when I run the program it doesn't display any of the information, columns, etc. It displays an empty table.
I know that there is information contained by the GridView though as I have print statements that return the row count. Specifically:
Console.WriteLine(GridView2.RowCount) ' returns the number of rows that should be displayed
Console.WriteLine(myTable.Rows.Count) ' returns the number of rows that should be displayed
What should I do so that the actual data within the table (DataTable) and the DataView is displayed to the user. I know the row count is correct as when I add/remove a record the row count correlates by incrementing/decrementing.
In addition I have this same problem in C# and in Visual Basic
Ok I have the solution and it is rather easy. Go into the design view and from there go into the designer for the GridView. In there go to Columns, under Main, and add each column that you want displayed from your select statement. For each put the name that the select statement had for each column under 'FieldName' and under 'Caption' you can rename the columns to what you prefer.
Related
I've tried to find a solution to this, but can't seem to find anything that quite matches my goal here. The answers I've found are either C# or are wanting the data to go from the DGV to the DT.
I have a datatable, which is built out using an SQL query. In this data table, I have a column "Lab ID" that I want to use as a search index. On my front end, there is a requirement for the Lab ID to be supplied. When the Lab ID is entered, the data table should be searched, and the resulting row (entire row) should be added to the datagridview. Each scan should add a row and not overwrite. I have specified the DGV columns at form load but would like it to grab the column names from the table if possible.
Here is my current front end - noting that the left datagridview is only temporary to confirm the data is coming out of SQL and references the same datatable I am wanting to use for the right DGV. The user will pick the dates, enter the Lab ID, then click Check. If the Lab ID checks out, it should be added.
The other thing I'll need to able to do is compare the results in the data table with what is in that datagridview - if an item in the table is missing in the datagridview, I need to be able to retrieve the missing Lab IDs (don't need the whole row for this one) and add those missing Lab IDs to a messagebox.
I don't have any code at this point because I've not found anything that works, with the exception of this:
dgScanned.Rows.Add(GetResults.Rows)
Which results in the string 'System.Data.DataRowCollection' being added to the 'Request ID' column.
I have a problem with SSRS report builder. Basically what I want to do is to delete a column. I have a report that someone else made and there is 1 column (xxx) that no longer exists in data source tables so I need to delete it.
When I go to query designer and delete this column from the code and run it there, it works. I close query designer window and see that list of columns (fields) is updated now and xxx column is not there. Then, I delete this column manually in designer (default screen) and when I try to run the report, It doesn't work:
"The Value expression for the text box ‘XXXDataField’ refers to the field ‘xxx’. Report item expressions can only refer to fields within the current dataset scope or, if inside an aggregate, the specified dataset scope. Letters in the names of fields must use the correct case."
But that field should be already deleted. So I don't know what else I can do, or what it can be linked to. I just want to delete it. Any Idea?
Thank you
If your dataset does not contain xxx but your DataTable has this error is normal
You either delete that column from your table or at lease delete DataSet Binding from table so that SSRS does not try to retrieve that column from DataSet
It will be a reference to the field in another field. For example, if you deleted a column that showed an OrderShipped status, then you might have another text box highlighted based on this.
The error is telling you which textbox is in error. So, click somewhere on the designer, then in the properties window, right at the top, click the dropdown which allows you to choose specific report items, choose XXXDataField (the one named in the error message) and then check the value expression. In there you will find the reference to the column you deleted.
I am working on a SSRS report with a Multi Value Parameter which contains list of names. I have written an expression for the title that works like "Result for SELECTED NAME". It also have an option of (Select All) which displays all the results with title as "Result for MULTIPLE NAME". It is working fine up to this part.
Now I have to modify the report like, If i select multiple values, the report should break into pages with each selected name on different page with title for that individual parameter value(name) as "Result for SELECTED NAME".
Please help me. Thank you.
You can place the entirety of your current report (excluding headers/footers) into a List object. I assume youa re returning the selected values from the parameter (like Manager Name) as part of your DataSet. Assuming this is the case
Create a new list
Insert the contents of your report into the rectangle of this List
Right click the List Row Header and Select Row Group -> Group Properties
Set the Group to Group on
=Fields!ManagerName.Value
This approach will take a simple table like this
And break it into a list like this
Then you can just set the Tablix Properties of the List to Add a Page Break After to checked
Hopefully this is helpful. If you have further questions on this then please let me know
I worked on it and found a way to make it happen. I first created the row group for Names. Then applied the page break for each instance option. Then deleted that group column (Only deleted column but not group). Then added that group in a static column on the top, and wrote an expressions to show that group itself as a title using concatenation.
But here I faced another problem, when there is no data for the selected name, the title row isn't displayed in the preview as it also a column in the table.
Basically, I have a combo box that I'm using to select a record. That combo box then populates several textbox's that are found on my form based on the ID. See the two images:
.
I'd like the combo box to show the first two columns in my query, which consists of 16 fields. The Abbreviation and the Name, to be exact. However, I found that if I hid the fields in the query or if I limited the column count of the combo box so it only displays the two, it actually culled the data so that the textbox's would not find it (thus be blank).
My question is, how can I just show the first two columns of the combo box yet still use it's ID to reference all sixteen?
Query
SELECT Tradeshows.tradeShowAppreviation,
Tradeshows.tradeShowName, Tradeshows.tradeShowID,
Tradeshows.tradeShowWebsite, Tradeshows.tradeShowLocation,
Tradeshows.tradeShowDateStart, Tradeshows.tradeShowDateEnd,
Tradeshows.tradeShowBoothSize, Tradeshows.tradeShowShipDate,
Tradeshows.tradeShowAudience, Tradeshows.tradeShowFocus,
Tradeshows.tradeShowMailer, Tradeshows.tradeShowDoorDrop,
Tradeshows.tradeShowProductFocus, Tradeshows.tradeShowAttendees,
Tradeshows.tradeShowMembers, Tradeshows.tradeShowMemberships
FROM Tradeshows;
Do not change the column count, change the column widths.
Column width: 0cm;2cm;1cm;0cm
And so on.
it should not be difficult to only select the relevant columns. You could post the Row Source property of your combo.
It seems to me that you should be binding you table to the data source TradeShows and using the wizard to create a combobox that finds record.
You can do this by selecting the table Tradeshows and choosing either create form or form. You will now have a form with the RecordSource property set to TradeShows. Next, choose to add a combobox to the form, ensuring that you have selected the wizard (the magic wand button is highlighted). You will be given the option to "Find a record on my form based on the value I select in my combobox". You can choose this and step through the wizard. When you get to the step where you choose fields, make sure you choose the TradeShowID first, and then the name and / or abbreviation. If TradeShowID is the primary key, as it should be, the column will be automatically hidden in the next step, which will show the fields selected.
The result of these actions will be a combobox with the following properties:
Row Source : SELECT [Tradeshows].[tradeShowID], [Tradeshows].[tradeShowName],
[Tradeshows].[tradeShowAppreviation] FROM [Tradeshows];
Bound Column : 1
Column Count : 3
Column Widths : 0cm;2.54cm;2.54cm
You will also have [Embedded Macro] in the After Update event (2010 and possible 2007) or [Event Procedure] for earlier versions. The wizard code is pretty poor, but that is another days work.
If you still wish to do all the work of setting each control to the (possibly changing) column order, you can follow a similar lay out for the combo, setting counts and widths appropriately.
I've got a form that returns multiple records from a table. Each of these records has a field indicating what the measurement was and the measurement's value. My form's record source pulls the appropriate ID's set of measurements and values, and then I want to write each of these measurements to different text boxes on the form.
The problem is that I'm also keeping track of the date this data was updated, and want to include only the data pulled based on the "date updated" selected at the top of the form.
When I go to pull the measurement value into a text box (with something like max(iif(Measurement="Acidity", [Value],[Null])) I get #Error all down my form. This had been working earlier today, and as I've been developing the form something changed and now it no longer works (everything but the date returned is saying #Error). I've set it to Requery when the form loads and whenever the date selected is changed.
EDIT:
This form is actually a subform of another main form. The main form has a control called MemberID which a user can use to select the Member they want information about. This is based on a query that pulls from a table the information related to that MemberID (one row per MemberID). When the form loads, the query behind the main form needs to be requeried to get the data for the selected MemberID.
Then there is this subform causing the problems. On this subform is a "Data Updated" drop down box, which lists the possible dates that the data was updated. When one chooses a particular "Data updated" in the drop down box, this chooses the latest data for all the data measures up to that date selected. This means the form's record source pulls about 10 records in my case.
Then, on this subform I try to layout these 10 records' values in different text boxes. So, in my acidity case above, I would say iif(Measurement="Acidity", [Value], Null). Because there are 10 rows returned, I will end up with 9 Nulls and 1 value, and to get that value I use the max function, so the text box's control source reads: max(iif(Measurement="Acidity",[Value],Null)).
The strange thing is this code was working this morning, until later this afternoon when I was filling in the remaining text boxes with similar code, and then it stopped working. I had also renamed the boxes from Text71 to more relevant names, but none of these are referenced in the code.