Get DataGridView Column Type?
Feb 27, 2009How do I get the column type of a DGV column if I know its index? I know this should be easy, but I couldn't find it anywhere.
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Change Datagridview Column Type?
Apr 15, 2012how 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 RepliesDatagridview Change Column Type Programmatically
May 17, 2010How 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
[Code].....
Datagridview Combobox Column Type ValueMember
Feb 28, 2008I have a qestin of how to access the ValueMember after setting it? A useer adds values to a row on a grid and selects a value from the combobox. Now I need to roll through the rows to validate and insertt the records into the database. I cant seem to access the ValueMember property. I have set a a looping structure and want to access the ValueMemeber property. I can get a property called Value, but it seems to be the DesplayMember value. How to access the Valuemember?
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Get Column Data Type In Datagridview For Comparison?
Dec 15, 2009I am writing validation for a datagridview which may open a number of different tables (dependant on what the user selects). The idea is that the user will select a lookup table to edit or add too, the datagridview opens (via a binding source) and populates itself with a specific table's data.
The user can then edit the data in the rows and when they are happy update the dataset which in turn updates the database table.
This all works except there is no validation per say prior to the update. As the datagrid loads a different table dynamically I cannot predetermine table column names (without writing a mass of hard coded values) so I would rather go by the datatype of the column since the tables all follow a similar format.[code]...
Datagridview Column Formatting To Financial Type Format
Jul 7, 2009I have a column in a datagridview which is populated with a string. Can I format it to financial type format? Here is what I am trying, but not getting it.[code]This is not working so how should I go about doing this? All I am getting is right justified values.
View 3 RepliesDataGridView Conditional Formatting - Date Column Type
Dec 25, 2011I have to Visual Basic 2008. DataGridView I want to make Conditional formatting. Date Column type based on the rows that meet condion want to paint.
View 2 RepliesIDE :: Allow The User To Only Type In A Certain Number Of Characters In A Datagridview Column?
Apr 14, 2006Is there a way to allow the user to only type in a certain number of characters in a datagridview column? Like a invoice number can only be 1-6 digits long and I want to stop them from typing more than 6 digits.
View 7 RepliesCalculation Column Totals DataGridView, Cannot Cast From DBNull To Other Type?
Jun 30, 2010I've spent the last three day on this. Hope someone can shed some light on the problem.I have a datagridview I which to total a column and place in a textbox. with the coding below I do get the first number and it is place correctly in the textbox but when I complete the data row and move to the next, I receive the following error. "object cannot be cast from DBNull to other type." Read and tried a lot of ideas on line , could not get any of them to work.
[Code]...
Failure is not an option! But sometime you need to look at those option.
Visual Studio 2005 Offers 2 Of Each Column-type Control In DataGridView?
Dec 10, 2011I'm using Visual Studio 2005 on Windows XP.When I drop a new DataGridView into my Windows Forms, and try to make 1 of the columns a checkBox, VS2005 gives me TWO of each columnType choice:
TextBox
TextBox
CheckBox
CheckBox
[code]....
Is that normal? Should I use "CheckBox type 1" or "type 2"?Also,When I make 1 of my columns a "checkBox", and then try to use it, the checkBox seems keep turning itself back ON.I turn it ON, and then click on a different column or row, and the checkbox stays ON, like it should.But if I turn the checkBox OFF, and then click on a different column or row, the checkbox magically turns itself back ON. I can't find anything in my code that says "turn it back on". And I've never connected it directly to any data source.
Add A Checkbox Column At First Column Of Datagridview Including Column Header?
Apr 9, 2010How 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 RepliesAsp.net - Fixing Column Data Type And Duplicate Column?
Nov 30, 2010This 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
[Code]....
Add Persistence To Multiple DataGridView In Terms Of Hide/Show Column And Column Width
Feb 24, 2010Add persistence to multible DataGridView in terms of Hide/Show column and column width
View 1 RepliesDatagridview - Sort Datagrid View Column With Numbers And Texts On Column Header Click?
Feb 13, 2012It 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
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Datagridview Tab Key - Ignore Column(2) So That The User Only Tabs Through The Rows In Column(1)?
Feb 27, 2009i 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.
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Disable Datagridview's Column In Term Of The Column Will Not Receive Focus
Mar 25, 2011I 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.
Change Textbox Column To Combo Box Column In Datagridview
Jul 8, 2010In 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 RepliesChange Textbox Column To Combo Box Column In Datagridview?
Jul 8, 2010in 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.
Replace Column By A Related Column From Another Table In DataGridView
Dec 14, 2011I 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?
Show Bit Column As A Checkbox Column In Unbound Datagridview
May 14, 2010Dim 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
Converting The Type To Number In The Datagridview To Covert Type
Feb 15, 2009i have a column in datagridview composed of numeric as well as aphanumeric. What i want is when the user sorts the column, it will be sorted according to its number value, 1,2,3,4,5,6,7,8,9,10. However it my current module, the program sorts basing the first digit of the column. like 1,10,11,12,2,3,30,31.
i was thinking of converting the type to number so that it will be arrange properly, is this possible in the datagridview to covert type? because i saw only a readonly property celltype? i have also tried casting it in the sql query itself to INT but it did not work.
Get Column Index Of A DataGridView Column Using DataPropertyName
Jan 18, 2012Is 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 RepliesIdentify A Datagridview Column Based On Column Name?
Dec 13, 2010I 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]...
VS 2010 Datagridview: Move To Column 4 But Instead To Column 5
Apr 9, 2011I 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]...
DataGridView Input Validation - Certain Column On Datagridview Should Accept Integers Only, Otherwise, It Will Return A Messagebox
Jun 5, 2011Some 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 RepliesDB/Reporting :: Displaying DataGridView Text Column In A Mixed Bound/Unbound DataGridView?
Mar 15, 2011I 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]....
Sort DataGridView Numbers (when Clicking The Datagridview Column Header Text)
Mar 11, 2010A datagridview is sorting numerical values (when clicking the datagridview column header text) in the wrong order based on the initial digit:
[Code]....
Parameters Data Type - Add Parameter With Same Data Type As Column Data Type
Feb 26, 2012For each column in data table i want to add parameter with same data type as column data type. But looks it's not that simple.
Dim cmd As New SqlCommand
Dim dType As New System.Data.SqlDbType
For Each cl As DataColumn In DataTable1.Columns
[CODE]...
How can I do this?
Column And Default Value To The New Column In Datagridview?
Dec 17, 2010I have the following code to add a new column into the datagridview but how to default value to this column?
I do not want to use for loop to loop through each row and get the column updated, is there any other way?
I want to default them to 'N' and i will have the code to change it to 'Y' subsequently based on conditions.
dgDataConfiguration.Columns.Add("Update", "Update")
Get Type Of Data Column?
Aug 7, 2009The user enters information into a textbox and I would like to reflect these changes on the database. So say there is a value of 50 in the textbox and the user just deletes this and it is now "". When I try to update the database I receive an error as it expects a type of double. However, simple appending a 0 here when a value of "" is encountered will not work for me as I have a universal function to handle all of my updating needs. How would I go about determining the type of field I am dealing with (int, double, varchar) of the data table which I currently have in memory
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