I have a datagridview in a winform for my .net application. Using access 07 for db. I am trying to retrieve the name of the selected column but I have found nothing available to assist me. This is what I do on the ColumnheaderMouseClick event :
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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 RepliesIn a DGV there are 3 columns. we need to populate a column with a value corresponding to the previous column value,
like,
DefaultValues:
Id | Name
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how do I set a column of a datagrid so that it will only accept numbers? I have this column labeled "Grade" which of course, should not accept letters. I have done setting its Format property but it is not working.
View 3 RepliesI am using VB.Net 2008 and have build a windows form with a datagridview that displays a query of records for the current client. One of the columns is for Fee. I need to total that column and place the result in a Label or Textbox. I am using the Query builder to pull the records and so I can not get away with the SQL expression in the query returns the Schema does not match error. I have tried to code it pulling the information directly into the form from the Datagridview and could not make that work either.
View 1 RepliesI have following codes
str2 = "select sno,name from employees where sno =" & Val(Me.TextBox1.Text)
cmd2 = New SqlClient.SqlCommand(str2, con)
da2 = New SqlClient.SqlDataAdapter(cmd2)
dt2 = New DataTable
da2.Fill(dt2)
Now dt2 has two columns as sno and name
But I want to add a 3rd column city type char(80)
Right now when I need to refer to a cell to update the text I do it this way:
DG1.Rows(intRow).Cells(1).Value = "Hello!"
Is there a way to use the column name for column #1 rather than the number? This way if I decide to add columns later in an update and it's not at the end of the current columns, I do not have to re-number all my code. I tried searching but must not be looking for the right keywords.
I am generating the contents for my DGV by using the following
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I have a datagrid with 4 columns for price... I want users to enter only numeric values. How is it possible
View 3 Replieshave bound a column of datagridview to a sql datatable..Now when i m selecting an item from combobox , another coulmn of that datagridview should show field value from another sql datatble
View 5 RepliesI have a matrix which is in a text file.
ABMS101848 T G
ABMS101848 C H
ABMS101848 A S
SDFR236176 D Q
SDFR236176 2 X
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Alright, I have this Access Database. It has 6 Columns: ID | Class Name | Class Code | Class Room | Grade | Teacher
My ID is the Unique Column that I need to reference back too when Updating my other Fields so I get the correct field.How do I do this? Properly.I've been thinking of a method but I doubt it would work.First I would start off selecting all the ID's and then LOOP through all of them, and then rewrite them to to + 1 Each time I make a Delete, so Each Time it will be a consistent 1 2 3 4 5 6 7 8 9 10 .... etc... Then I can reference from that to my Combo Box Selected Index + 1 to get the Correct Row which corresponds with the Selected Item.Will this work? Or will I still need a Unique Fields that I reference back too.
I have two text files, the first text file has two columns separated by a space (" ") and the second text file only has one column.
The column 1 in text file 1 and text file 2 match albeit in different order, what I'm trying to achieve is for every field in column 1 text file 2 I want to search for column 1 in text file 1 and display the matching column 2 field in column 2 text file 2.
Dim*OpenTextFile*As*String*= IO.Path.Combine("C:Test1.txt")
Dim*OpenTextFile2*As*String*= IO.Path.Combine("C:Test2.txt")
Dim*SaveTextFile*As*String*= IO.Path.Combine("C:Test2.txt")
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is there a way to show in datagrid only those row that has column that is empty, im using this code
Me.DataGridView1.DataSource = ds.Tables("0").Copy() but it shows all the data from my table.
I want to add a combo box to a column in a datagridview.It is displaying OK and the dropdowns are OK, but how do I get it to display the actual value in the box/cell?
With cmbLdecs
.HeaderText = "L Decs"
.Width = 60
.Items.Add("No")
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I have made and application to read from an Access database file listing a baseball teams players. I have designed and coded a button that is to calculate the average age of all the players. Everything works, but I can only get the ages to add, but do not know haw to get them to divide by the number of records in order to get the average. The database is subject to change, increasing or decreasing in the number of players. How do I average a column in a database? Here is what I have:
Private Sub btnAverageAgeOfTeam_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnAverageAgeOfTeam.Click
' This click event will average all the ages of the players
' together giving the total average age for the whole team.
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How to Change Column Name in DataGridView? when fill data from table in access database?
DataGridView1.DataSource = DataSet1
DataGridView1.DataMember = "Tab1"
When i use the code above , DataGridView Will be filled with "Tab1" Data and The names of the columns would be the same in the table?
What is the best datagridview event to use these codes I want to check column 0 is empty or has some value
If e.ColumnIndex = 0 Then
If DataGridView1.CurrentCell.Value = "" Then
MsgBox("Empty Value")
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I'm trying to get data from one column on my datagridview (That is reading data from an SQL Database) and put the column into a listbox.im using Datagridview as I made a program that was previously using a HUGE number of querys that make the program very inefitient when im only after one number etc, instead im downloading all the information to a datagridview object then using that for my querys then updating the database, at the minute i need to be able to manipulate the data into VB objects so the user doesnt get confused, need 1 column from datagridview to populate a listbox.
View 2 Repliesi use a linq query to pull data from an xml inventory and place it in a a DGV, problem is the column ordering appears to be in the same order as the properties and fields in the row object class and not the order extracted from the xml with LINQ. I suppose i could rearrange the class so that it refects the column ordering i need but i'm wondering is there a way i can control programatically the order of the columns for my DGV? and why does it use the class structure rather than the query structure anyway? the class is done alphabetically as i wrote it with class diagram and class details, the LINQ query is in the order i need it in.
View 9 RepliesI'm connected to an access database using VB 2008.. there is information already located in the tables. But what I am looking to do, is find the "SUM" of all the data in a certain column.
View 35 Repliesi need to get only unique value of a column of a datagridview es:
COMLUMN
value1
value2
value3
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and get only:
value1, value2, value3, value4
how i can do this?? is possibile make a quaery into datagridview?
How can I add a button to a listbox? I mean: for every single item, one button. I want the button in another column.
View 4 RepliesI have 3 columns, "Username", "Email","Password"and this is for a program I am making so people can sign up for my program and I will have a webpage to display the username email and passwords in a hidden input textbox. When the user loads the form it wll go to the website, get the text from the hidden textbox, and load it into a get all the emails and passwords and load them into a datagrid and under the appropriate columns. How do I add items to a column the same as I would with a listbox?
View 6 RepliesHow to apply primary key on sno column in the following dataset
dim sql = "select * from employees"
Dim da As new SqlClient.SqlDataAdapter (sql,con)
'ds.Clear()
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I have a Datagridview that is NOT bound to a table, and i want to insert a autonumber in the firts column. Each time a row is added the number should increase.
View 2 RepliesMy datagridview has four column while press tab, i want to column2 not to get focus.
View 6 RepliesI got some simple sql statement to see a record but I get an error - column does not belong to table...Here's my
Dim mydataset As New DataSet
mystring = "select max(NoteRef) as max_NoteRef from notes"
Dim adapter As New SqlDataAdapter(mystring, nwindconn)
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Im trying to make it so that the user can pick what column to see and what now to see. How would I make it so when the user right clicks anywere thats on the column name show a contexmenustrip?
View 3 Replieshow can i change the format of the column? instead of 1/2/2009 6:00:00 PM i want it to be 1/2/2009 18:00:00
if i transfer it to excel it shows the right the format but in datagridview its different..