I'm have trouble summing a datagridview computed column. I can sum other columns in the DGV. Is it possible to sum a DGV computed column and have the result shown in a textbox elsewhere on the form? I have BindingSource with an End Date Column and a DaysLate computed by column. The calculation is in code and works fine. I now need a total days Late TextBox under the DGV days late column
View 2 RepliesI have an underlying dataset for my datagridview which it is bound to. I've done most of the DGV code programatically.
I'm calculating quantity x Price and displaying it in a cell like this, which works well:
Private Sub DGVAdviceDetail_CellFormatting(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellFormattingEventArgs) Handles DGVAdviceDetail.CellFormatting
[Code].....
I Have a Datagridview, with a column containing integer values. Is there any way to make a fast sum of all items in the column?Something like a SUM function in SQL.
View 12 RepliesI have a Dataset with a Bunch of Columns used in a Report (DevExpress XtraReports) (DataSet being the DataSource). The Dataset has many columns, and i need to read a column (based on the row type), and decide which column value to read for the row, and apply formatting based on the row type.
[Code]...
Is there a suggested way to handle this in the Report or at DataSet Level (excepting the formatting part)?
i got two columns in mysql 2005 Grade and Remarks i need to do is.. when i input integers in grade column 1,1.25,1.50,1.75,2,2.25,2.50,2.75,3 then Remarks will show PASSED and when Grade is 4 up remarks will show FAILED(OPTIONAL)if Grade is null then Remarks will show UNKOWN this is my code but it doesnt works on sql computed column formula IIF(Grade >=4, 'Failed', IIF(Grade IN (1,1.25,1.50,1.75,2,2.25,2.50,2.75,3), 'PASSED','UNKNOWN'))
View 1 Repliesi need the max ,min, avarage, for the 24 lines that lines counted from the line that contain the max date so i get the code for the max date for in the txt file this code used for both if txt file sorted by Ascending or by Descending
Imports System.Collections.Generic
Imports System.ComponentModel
Imports System.Data
Imports System.Drawing
[code]....
I'm trying to add a computed column to a datatable that references another column in the datatable. Sometimes the computed column has a mathematical operation applied to it, but in this case I'm just referencing the original column. The code looks like the following:
ReportData.Columns.Add("1_1_US", _
GetType(Single), _
"1_1")
The code isn't actually hard coded as shown above - there are functions that return the values for the first and third parameters - but I checked those and they are returning the expected values and not generating any errors themselves.
The error is thrown when the .Add method is called, and the error states "Syntax error: Missing operand after '_1' operator." It seems to me that it doesn't like the column name, which I suppose I could change and just workaround it at the presentation level. Still, I'm curious. Is this a bug in the .net framework or something? It doesn't mind "1_1" as a column name in the datatable, so why is it having a problem with it in the expression statement?
How to add a checkbox column at first column of datagridview including column header?After adding, how to code to "check all" or "uncheck all"?
View 27 RepliesAdd persistence to multible DataGridView in terms of Hide/Show column and column width
View 1 RepliesIt seems that on clicking datagridview column header, the column will be automatically sorted based on the column type. I have a column showing some numbers. If column type is string, it sorts "1","20","3" into "1","20","3". If column type is double, it sorts into "1","3","20" which is the result that I want. However, there might be some erros in the numbers and error messages(text) will show in the cell instead of numbers. So I cannot set the column type as double. I want to ignore these error messages and sort all the numbers. How can I do this?
Also, I need to add some background colors to different rows in datagridview. So in the column header click event, I call the bkgColor Sub to achieve this. My question is that how can I override the sorting method in this event?
Private Sub DataGridView1_ColumnHeaderMouseClick(sender As Object, e As System.Windows.Forms.DataGridViewCellMouseEventArgs) Handles DataGridView1.ColumnHeaderMouseClick
Try
[code]....
i have a datagridview with three columns. i set the first column to visible=false, so the user can only see two columns.when the user presses the tab key in the first visible column -- column(1), i want to ignore column(2) so that the user only tabs through the rows in column(1)i can't get it to work. it will always tabs through the rows in column(2) even if i use the column name.
[code]...
I want to disable column in datagridview so the column will not receive focus,
when user press tab to move from cell to cell this column will be skipped and the focus move to the next cell or column.
In my window application i have taken one combobox field with its collection as "amc", "war" etc. Now in my datagridview this combobox column is display as Textbox column, i want to change it to combobox with the above collection "amc","war". I have retreiving the result in datagrid through sql query, hence in datagrid edit column section we doesnot have that part to change to Combobox column.
View 1 Repliesin my window application i have taken one combobox column with its collection as "amc", "war" etc.Now in my datagridview this combobox column is display as Textbox column, i want to change it to combobox with the above collection "amc","war".
I have retreiving the result in datagrid through sql query, hence in datagrid edit column section we doesnot have that part to change to Combobox column.
I have:
- Table1 with columns: PK_ID1, LOCATION, DIRECTOR, SELLER, SELLERID, WORKTIME (relationship), WORKCODE
- Table2 with columns: PK_ID2, WORKCODE (relationship) & WORK_DESCRIPTION
My DataGridView do a SELECT * FROM Table1;How can I replace WORKCODE with WORK_DESCRIPTION in DataGridView, please?
Dim Comp = From C In db.Table1 _
Select C.Completed, C.Taken, C.Namne
Datagridview1.DataSource = Comp
Am using the Entity Framework and Columns Completed and Taken are of bit Datatype. When the query results are displayed in the datagridview, these bit columns are returned as of ColumnType Textbox - so i get a Datagridview textbox column with true or false string values.
I want to display Completed and Taken as Checkbox columns (either ticked for True or un-ticked for false) but ofcourse i can't do this in EditColumn dialogue because the Datagridview is unbound.
how can i change this in code at runtime
Question is the title itself. I was asked to use computed columns in SQL Server. But when I searched about it in Google, I found it was mainly for displaying the combined values of more than one coloumn. And usage of this may reduce performance if it is treated as a permanent coloumn. So I like to know
Advantages and disadvantages When and where we need to implement this. how can I achieve a solution for the below problem, if possible (with Compute columns. If not possible why?). Or any other way to implement this requirement. My requirement is to use a colomn which will identify which coloumn of that table was updated.So I can compare the values and identify the changes.
[Code]...
Is there a way to find the column index of a datagridview column using the columns DataPropertyName?I currently use a loop (shown below in the class) which is kind of ugly, but it works. I'd like to do something like this, which seems more elegant.My goal is this, I store the users DataGridView column settings (i.e. DisplayIndex, Visible, & Width).When the user opens the form that contains the datagridview I want to get those settings from the database and apply the settings to the datagridview.[code]
View 5 RepliesI have a data gridview on my windows form with 4 columns. Now I identify a column as followed:
Dim item1 as String = DataGridView1.Item(1, index).Value
So now I use a number ( In this case: 1 ) for the column index, but I want to make it a bit more readable so now I want to obtain the column index based on the datagridview column name.[code]...
I want to move the cursor from column 1 to column 4 but what happened instead the cursor moves to column 5, this happens when I use the enter key event. but run well if I double click. The following description of the program: there are 7 columns of code, item description, unit, price, qty, discount, item amount code when key enter press :
[Code]...
PLATFORM VERSION INFO
Windows : 5.1.2600.131072 (Win32NT)
Common Language Runtime : 2.0.50727.1433
[code]....
Does anyone know how to rectify this problem,
ClickOnce Deployment Issue - File Has Different Computed Hash Than Specified In Manifest - Urgent! : ClickOnce and Setup & Deployment Projects : Windows Forms : MSDN Forums
ERROR DETAILS
Following errors were detected during this operation.
[12/22/2008 9:14:26 AM] System.Deployment.Application.InvalidDeploymentExc eption (HashValidation)
- File, NonFormEntryWindow.exe, has a different computed hash than specified in manifest.
- Source: System.Deployment
- Stack trace:
at System.Deployment.Application.ComponentVerifier.Ve rifyFileHash(String filePath, Hash hash)
at System.Deployment.Application.ComponentVerifier.Ve rifyFileHash(String filePath, HashCollection hashCollection)
[CODE]...
COMPONENT STORE TRANSACTION DETAILS: No transaction information is available.
What is an efficient way (must be performed in a loop quite often) for getting the difference between two timestamps that come in form of DateTime-variables?
View 1 Repliesi have a combo box with grade A to F in it and at the combo-box textchange event it sholud add the value of each letter to and store it in a textbox.This is because i am adding all the grades of a student into a datagrid and i want all the 8 different grades to appear in the grid but it should some only the first selected six out of the eight...I am using this code but it is not stop when the loop counter is six?
Private Sub cmbgrade_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmbgrade.SelectedIndexChanged
If Me.cmbgrade.Text = "A" Then
[code]....
So with this code any time the user selects any of the Letters it should at it value to a tatal aggregrate till it add six different letters since i want to calculate for the grade of best six...example if user picks A A A A A A it should some up to six in the textbox and after that it should stop summing and add to the datagrid.that datagrid will have all eigth grades in its column but the system must add only six of them?
How can I sum up listbox value but the value I want to sum up is the one i multiplied. The q variable. look at my code. I want the sum of all Q variable in the textbox.Disregard the variables declared because I was trying to get some experiment but failed so some previously variables used left ,I did not clean up my variables.[code]
View 9 RepliesSome codes here on how could I validate my datagridview? I mean, a certain column on my datagridview should accept integers only, otherwise, it will return a messagebox. Kindly include on which event it should be posted.
View 17 RepliesI have a DataGridView (dgv) on a Windows form (VB.NET) which is bound to a datatable. One of the bound columns is a an ID (Foreign Key) to another datatable. All I want to do is Hide the ID column and populate an unbound column with the Name (ParmName) for the user. I searched the foreign value in the datatable and retrieved the information. I set the Value of the cell in the Datarow. All works well, but does not display. The cell accepts the value...I can even Debug.Print the values to the console. They are there just nothing displaying in DataGridView. Nothing odd about DataGridView. Should be straight forward...
My Code
,
Dim dtParm As DataTable = MyDataSet.tblParameter
Dim dgv As DataGridView = Me.dgvResultNum_DataGrid
[code]....
I will be developing a Windows Application that will write data to an excel file.I would like to know if formulas used in the computed cols will still work on the new rows that I add or edit through program.
View 4 RepliesOK, folks, help me figure out what I'm doing wrong. I have the following
Dim table1 As New DataTable("Table1")
table1.Columns.Add("column1", GetType(Integer))
table1.Columns.Add("column2", GetType(String))
table1.Columns.Add("column3", GetType(String))
table1.Columns.Add("column4", GetType(Integer))
[Code]...
table1.Columns.Add("column7", GetType(String), "parent(Relation1).column6")On the last line where I try to add column7 I get an error saying "unable to find parent relation 'Relation1'". I thought I just added that relation?
A datagridview is sorting numerical values (when clicking the datagridview column header text) in the wrong order based on the initial digit:
[Code]....