I am trying to set to autonumber, the column called "enregistrement" , that exists into different dataTables that I have.
vb.net
For TabIndex = 0 To oData.Tables.Count - 1
oData.Tables(TabIndex).Columns("enregistrement").Au
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How i can change data grid view column type runtime. like i want to make a coloumn checkbox but runtime.
View 8 RepliesPublic Class Form1
Private cbox As New ComboBox With {.Location = New Point(50, 0), .Size = New Size(50, 20), _
.DropDownStyle = ComboBoxStyle.DropDownList}
Private lv As New ListView With {.Location = New Point(0, 30), .Size = New Size(150, 50)}
[code]...
I have a datatable contain fId field. I want to update all values for this field to "1" without using loop. [Code]
View 1 RepliesI am using vb.net framework 3.5. I am developing an windows application in that i am displaying the Richtextbox data on Web browser. But in my rtf data contains the Math type functions which are not properly displayed in the web browser. For changing the font i used the method like put the data in the richtextbox change the size and font and again update it . But it's not working for math type.
View 2 RepliesI'm retooling an app, and condensing my queries down to one, but to do so, I would like to move the columns for better presentation. I am reporting on errors for particlular equipment, and the user may want to get equipment by errors or errors by equipment. Is there any way to change column order?
View 5 Replieshow i can change the text type field of datagridview to datetime pikcer or calender. if i click on edit columns in datagridview i can only see textbox column, combox, and button i want to change the date field in datagridview from text to calender or datetime picker.
View 1 RepliesHow do you change the column type in a datagridview programmatically? I have several tables that I want to allow the user to update using the same form. Depending on the table, I need to change the column type to a checkbox instead of text. Following is the code that I run (just exchanging the table name and column #). Everything works well as long as I don't try to change the column type.
Dim qry = From lst In dbCodes.Codes_InjuryBodyParts _
Select lst Order By lst.CodeDisplay
Me.bsCodes.DataSource = qry
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I am using sqlserver2005.Table1 has a column named bill_no and its type is textNow I want to change its type "Numeric"When I do this the it displays this error message
View 3 RepliesI created a RDCL in the designer. I would like the User to Determine what is shown in the Report. How can I change the query at runtime? (ex. changing the customer Name)
This is the query that I have in the properties:
SELECT [Date], Address, Customer, Orders
FROM Report_qry
WHERE (Customer= 'JohnDoe')
I have a dataview, and I am trying to "clone" its structure only in part, by creating a new table via code. I cut out most of the columns, so this is easier to read. My question is - Why does this always seem to add things a a string?
Later in my code, I try to sort based on "View_Order", but it acts like a string. The values sort as 1,2,20,21,22,3,4, NOT 1,2,3,4,20,21,22 like it should.
Using Cint() while moving the values from table to table didn't work for me... and the boolean becomes text as well. Is the problem in this code, or would it be elsewhere?
Private Function ConvertTable(ByVal ds As DataSet, ByVal TableName As String, ByvalWHEREexpression As String, Byval SORTexpression As String) As DataTable
'For Schedule Tasks, convert all "dates+times" to "dates only" as strings
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I have a datatable which has 5 column. It is possible to copy only its 2 column in and save it into new datatable.I used this code but it copies all the 5 column
Code:
Dim qry As DataTable = (From obj In temptable Where obj.Item("Column1") = 0 _
Select obj).CopyToDataTable
i used this one but it is not supported
Code:
Dim qry As DataTable = (From obj In temptable Where obj.Item("Column1") = 0 _
Select obj.item("Column1"), obj.item("Column2")).CopyToDataTable
I'm trying to create a datagridviewrow and add data to it at runtime. I want the row to have the cells correspond to the columns in a datagridview, so that when I add data to the cells i can call the column name (the columns are likely to change around, so i think the name is better to use then the index).I create the row using the following code:
Dim row As New DataGridViewRow
row.CreateCells(Datagrid)
and the column using the following code:
Dim col As New DataGridViewComboBoxColumn
col.HeaderText = "Reference"
col.Name = "Reference"
datagrid.Columns.Insert(0, col)
I would like to add data to the row via the following code (or something similar that uses the column name instead of the index:
arow.Cells("Reference").Value = Detail.Reference
However at runtime I get the exception Column named Reference cannot be found. Parameter name: columnName I have a sneaking suspicion that the cells cannot be accessed with the column name because the row isnt really attached to columns yet (the row hasnt been added to the datagridview yet. (I tried cloning the cells of a row and then adding them to the row but no success)?
i encounter this error while passing a string as datatable.
I populate combobox1 with tables/sheets from excel and each table has datarows which i want to get the data and import to sql corresponding table, so, I declare
Dim XLSTableName as String = Combobox1.SelectedItem
And I encounter the this error : Conversion from type 'DataTable' to type 'String' is not valid
how do i return the combobox1.SelectedItem as Datatable cos if i declare
Dim XLSTableName as DataTable and pass it to the select Command thus:
Dim objCmdSelect As New OleDbCommand("SELECT * FROM [" & XLSTableName & "], ODBConn)
to obtain the dataRows I got the following error: operator '&' is not defined for types 'String' and System.Data.DataTable'
I have a data table, i want to add a new column on that table, the data in that new column will depend in the data from another column. Now i can think of two ways to accomplish this, first is loop through the whole table and do the statements to get my new columns appropriate data. the second approach would be to give the new column an expression, then convert the table to xml (to remove the expression) then convert the xml string back to datatable.
Now, is there any other way around this? what could be the most optimized way in solving this task?
This is my programs complete code, the only problem is i want to fix the amount of decimal places that show up in my gridview. The problem is if i do this on the asp side the location of the column gets thrown off and the column is duplicated. I figured if i just remade the table on the asp side it would work only problem is if i remove the sql for that particular column the asp side column cannot get data.
Imports System.Data.Sql
Imports System.Data.SqlClient
Imports System.Data
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I get the below error Unable to cast object of type 'System.String' to type 'System.Data.DataTable'.This is the code I'm using
Dim str As String = String.Empty
If (Session("Brief") IsNot Nothing) Then
Dim dt As DataTable = Session("Brief")
If (dt.Rows.Count > 0) Then
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After Filling a DataTable in GridView's DataSource . A column with check box Type appears but it created as read only column and I can't enable it or make it editable... even i tried .readonly = false and still can't be edited
View 1 RepliesI have a listview and i want to make one column's font smaller than the other column to fit form design. How will i do that?
View 1 RepliesI have a datagrid that I am unable to change the width setting, it always reverts back to the original setting.
To change this setting:
1. select the datagrid view tasks
2. Edit columns bound column properties
3. Select Width property
4. Width property will always revert back to the original setting.
I have check the properties settings without any luck.
How replace comment column with value column in resource file via programming?
View 4 RepliesIn 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 a DGV I am working on, and I have many columns.
For example I have Columns colcase(Combobox), colreportTime(Time)
the combox shows 4 cases {A,B,C,D}
what I need to do is if the user select "C"
the the colreporttime will show the time of this change unless the old value is C
I have a string say, str = "system.Int16" I want to add a column in DataTable say, dt = new DataTable()I want DataType for that column as per 'str', i.e. System.Int16 Then How to? dt.Columns.Add("MyColumn", ...)
View 2 RepliesCan't add a new column for DataTable
View 2 RepliesI have a dataset with just 1 datatable and 1 row but with 2 columns.I want to get the value of the 1st column.How can I get it in vb.net
View 3 Repliesi have a Datatable having following result from database
ID Name Class FeeName Amount
9 gumman hgjgh 6Th Fine 0
9 gumman hgjgh 6Th Tution Fee 3000
9 gumman hgjgh 6Th Lebority Fee 500
10 AAdil Hussain 5Th Fine 0
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I am using VS 2005. My que. is that how to add column into datagridview at runtime?
View 3 RepliesI have a sql stored procedure that returns a certain group of columns in my datatable. How can I move (let's say) the column in the first position, to the last position before I export the datatable to excel ?
Dim myConn As New SqlConnection(strConnection)
Dim myCmd As New SqlCommand(strSQL, myConn)
Dim dt As DataTable = New DataTable()
Dim da As SqlDataAdapter = New SqlDataAdapter(strSQL, myConn)
[code]....
