Dim cmd As New SqlCommand(SQLSTR, conn)
reader = cmd.ExecuteReader()
Dim myDataTable As New DataTable
[code]....
i hve the follwoing code by which i bind the data to the grid the grid has 4 columns PRODUCTNAME, QTY,RATE, AMOUNT the user shld be able to edit the data in the column qty for as many rows it has but i m not able to edit this column how do i edit the values in the cells of column(1) ie qty?
The problem is my first' row cells values are their owner's column header text.
Ex.
-----------------------------------------------------
ID | FirstName | LastName | Address |
-----------------------------------------------------
ID | FirstName | LastName | Address |
[code]....
I'm completely newbie and I have been trying to solve a problem that is strongly related to what you guys had discussed here .
I have a datagridview (datagridview1) on my form and it is not linked to any database. I'm only trying to programatically enter values into the rows of the grid by values that my program generates.
For example if the value that my program generates is x, y, z then I would like to say something like[code]...
I need to be able to take numbers from multiple textboxes and input them into certain cells in Excel. Also need to do the opposite (Read numbers from Excel and put them into textboxes.)
View 2 Repliesam trying to calculate the values in rows in column 6 based on values of column 5. Bellow is the the code I am using I get a run time error about the string not formatted properly
[Code]...
I need to render a datagrid with different kinds of cells in the same column. For example, I have a datagrid with a column "name" and a colmun "value". Depending on the "type" of my record, I would have different cells in the column "value" like a combobox or a simple textfield. and I don't really see how to do that programmatically... I don't know if the datagrid is the best choice. I'm using asp.net/vb.net with framework 3.5
View 1 Repliesi have grid view with column ..price ...
Sno. Product price ($)
1 Pencil 1
2 Rubber 3
3 sharpner 2
I want to calulate the price column .... means //// i want to calculate the cells in Price column of GridView .....
the reult of price will be shown as 1+3+2 = 6
I have a DataGridView binded to a DataSet that I created using the Visual Studio Data Source Configuration Wizard. Everything works good except for one problem.I have two columns, Modified_By and Date_Modified that should be inserted or updated as the user and the current date, respectively. So every row in the DataGridView should have the same value for these two columns.So far, I have thought of two ways to get this working, but neither one seems very clean. The first idea is to make a custom Fill method that takes as parameters the user and the current date and then add them as extra columns in the select method. For example
View 1 RepliesHow do you loop through a name column in a DataGridView? What is the collection? The following below does not work.For each X in DataGridView.Columns("Name")Next
View 12 RepliesI have a datagridview with several column header cells “merged”. I’m using the paint event to achieve the merged effect as shown below.
Private Sub tblEnv_Paint(ByVal sender As Object, ByVal e As PaintEventArgs) Handles tblEnv.Paint
Dim brb As New SolidBrush(tblEnv.ColumnHeadersDefaultCellStyle.BackColor)
[code].....
i would like to know the syntax for this.i wanna add the values of 2 cells and then i will display their total in textbox.i have been trying to use datagridview.rows.cells but i cant just use it to add to cells values.
View 2 RepliesI want to perform some simple auto-formatting to the cells in my GridView. So far, I have the following code:
Private Sub gridviewRefreshPanel_RowDataBound( _
ByVal sender As Object, _
ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) _
Handles gridviewRefreshPanel.RowDataBound
[Code]...
I am a newbie in VB.net(programming). I need your advice regarding Gridview control.
I have a gridview loaded with two columns-one column(Name)is with some Text,another(Price) is empty.
I have got a TextBox with the data of Name and Price.
Now,I would like to loop through the Textbox,and see if the Data/symbols of the Column(Name) of GridView Control matches with the Data in Textbox.
If the Names of the GridVies First Columns data matches with the names of the Textbox,then the Price data should be fetched in the Second Column(Price) of GridView.[code]...
The code below updates all cells in a DataGridView column to a value from a textbox. This code works in that all cells in the desired column are updated on screen. The DGC is bound to a dataset. The problem is that when I call the dataset .Update method, sometimes the first row (row 0) does not get updated. I have run SQL profiler and can see that no SQL update command is submitted for the first row. The first row only gets skipped the first time the update is run after launching the app. Subsequent updates run for all rows, until the app is re-launched.
I have verified the row state is Unchanged with: Msgbox(DataGridView1.Rows(r).State.ToString).
The 2 commented lines below are other things I have tried that still cause the first row to be skipped.
Private Sub btnUpdateAll_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnUpdateAll.Click
If IsNumeric(Me.tbUpdateAll.Text) Then
[Code]....
[code]i need to read data from specific cells and assign them to other cells.
View 4 RepliesI have a DataGridView with SelectionMode = "CellSelect". I do this because I want the user to be able to click the Column Header and drag the column to a different DisplayIndex. They move the column by clicking and holding down the left mouse button, then moving the column. I also want the user to be able to click the column header and all the cells in the column would be selected. But if I change the SelectionMode property to "FullColumnSelect" or "ColumnHeaderSelect" the user can no longer move the column.In the code below, I can select all the cells in the DataGridView just fine, but I can't select all cells in a particular Column or Row. [code]...
View 5 RepliesI want to multiply or add the values of two or more cells in a datagridview control in a row and and should also be auto-saved in the database after entering datas in the cell. I am using SQL Server 2008 for my database. do take a look at the screenshot attachment that I made for further details..
View 4 RepliesI am new to VB.NET and I am trying to read a line of data from a .csv file. For some reason the line of code below is returning "System.__ComObject", why? I verified that the cell contains "4/8/2011 9:20".
Me.cv_wks.Cells(i, "G").ToString
I have a datalist in vb web form.How can i get the value in a specific rows and cells of a datalist?I could do it for detailsview but how to do it for datalist?Below is my code for detailsview: Dim selectedCommentAns As String = DetailsView.Rows(0).Cells(1).Text.I tried the same way for datalist but it dont have rows and cells to be selected.[code]
View 3 RepliesI want to retrieve the value from example Cell C4 and dim it as String and then retrieve Cell D8 and dim as string etc.
View 2 RepliesI searched for this topic and all the examples are in C# (and they have errors as they will not convert with a C# to VB converter). I am using VB.net 2005 and would like a sample that work for it. I have a loop that goes thru the DataGridView and changes the row color based on a column/cell value from the binded DataTable (shown below). I'd like to add to the loop (where the comment is) and also hide the button for this cell and let the "In Process" show in the cell instead.
Private Sub ColorInProcessItems()
' Color the rows green if they are In Process, red if they are Complete
For Each row As DataGridViewRow In dgvQueue.Rows
[code]....
I'm using VB.Net's Excel component to read Excel file, but the performance is totally slow, since it has to loop through cells to get values. Reading a file containing one sheet with 1162 rows and 105 columns (which is small size compared to my general requirement) already costs more than 5 minutes.1. I want to ask if any of you have suggestion on reading such an Excel file with better performance, except OleDB, cuz most compies here have vesion problem?2. Is it normal that it tooks a long time for Excel component to read Excel file, or is it that I implement the code in a wrong way?
View 7 RepliesWith an excel file opened, i'm trying to:
Select a Range of Non-Contiguous Cells within a Column, then return the address of the last active cell.
Below, is what I have so far: Note the section maked:
' I can't get the next bit to work: '
To make it work, so far :(
1. Create a new Project using VS-2010.
2. By default, the form should be displayed as "Form1.vb".
3. Add a Label (No need to name or set anything).
4. Add two buttons (Again, No need to name or set anything).
5. Double click on the Form...
6. With the form code displayed, Select all, then paste the following.
'Option Strict Off
'Option Explicit On
Imports System.IO
[Code].....
I am looking for an elegant datatype and method to handle this problem below in Java or dot Net environment (C# or VB.net)It is a (r x c) matrix of numbers (integers). The 1st column values is a 1D array (range of numbers). The 2nd column takes a different range of values for each of the 1st column value (so, its basically a 2D jagged-array). The 3rd column has a range of value for each pair of 1st and 2nd column values.(when the 1st and 2nd column is fixed with a value, the 3rd column takes a range of values). The number of columns is not fixed and depends on the user input. It can go up to 20 or even more
How do you handle this problem efficiently in java or C# or VB.net.I am linking an image to the equation that I want to program. , in-which C and S are some constants. i=1,2,3...r (number of rows) and k-1=0,1,2,3..c (number of cols). The range of R(i,k-1) depends on maximum and minimum values and MAY also depend on previous values from R(1,k),R(2,k)...R(i-1,k-1) according to the equation. The initial known values are fixed integers (not in a range) for R(1,c), R(2,c),...,R(r,c)
i have retrived this datatable from datasource and i want to add a more colum 'category'basedon the each value of each Role, like if role column has the value '90 daya client' then in the same row it should have a value 'DC' in the category column.n make a temporatry dt1 table but to add related values.
S.No First Name Last Name Role Date
1 Us er1Name User1Name 90 Day Client 11/01/2011
2 User1NameAtt1 User1NameAtt1 90 Day Client 11/01/2011
[code].....
I'm trying to edit the data of a column. I load the column in textboxes and let the user edit the fields. But now to insert it, I know I can delete the column and add a new one, but couldn't I just overwrite the data in the column?
[Code]...
<a id="ctl00_ctl00_cphBanner_BannerAlertsLoginView_BannerAlerts_Authenticated_rbxBanner​Alert_rbxAlerts_RobuxAlertCaptionHyperLink" class="RobuxAlertCaption tooltip-bottom" href="AccountBalance.aspx" original-title="ROBUX">740</a>
How do I edit the 740. For example, If button1 is pressed then. 740 textbox1.text. How do I edit the webbrowser HTML with the text box value
How do i edit the column header of the GridView control on a web form? I have added a Table to DataSource as:
Me.gvSearchBrandList.DataSource = ds.Tables(0)
in here "gvSearchBrandList" GridView control But the GridView control display the column headers of the Table in the database. But how do i edit those column name in the GridView?
i am using the grid from dev express.. in vb.net 2005..when i choose a row to edit, in that row, when i select a particular column , then cursor show focus in that particular column , instead it is focused in the first column in that select row.
View 1 RepliesI am loading a listbox with lines from a txt file. Now I would like to be able to edit values within that listbox by going there with the mouse cursor and type a new value..
E.g. the listbox displays:
7226218; Hemlock; 22.55; 4
0822722; Pine, Sugar; 11.55; 7
After editing it looks like:
7226218; Hemlock; 22.55; 2
0822722; Pine, Sugar; 11.55; 7
After pressing an "accept button" those values should then be written back to the txt file.