Get Empty Cells In Datagrid?

Nov 19, 2009

Im using this code to populate a datagridview:

Private Sub PopGrid(ByVal Filename As String)
Dim ConnectionString As String = "Driver={Microsoft Excel Driver (*.xls)};READONLY=FALSE;DriverId=790;Dbq=" & Filename & ";"
Dim Con As New OdbcConnection(ConnectionString)

[code]....

But when i look at the grid, there is alot of empty cells that is NOT empty in the excelsheet.

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I'm extracting data form a mysql using a huge query made up of three unions to searc on different tables for a telephone number. e.g. contacts, leads, etc.Iy workd perfectly in a sql tool and is well tested.When I run the query in visual studio, I get a result, two columns contaon the same image you get when a webpage image link is boken. These columns should contain a mobile phone number and an ID.Both are stored on mysql as varchars.No data is presented for these columns even though it exists with gaps

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Adding DataGridViewRow Manually Causes Empty Cells?

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This works:

DataGridView.Rows.Add("Bla Bla Bla", value1, value2)

But if I do:

Dim newrow As New DataGridViewRow
newrow.SetValues("Bla Bla Bla", value1, value2)
If Not value1.Equals(value2) Then

[Code]....

the entire row is empty.

Why is the row full of empty cells?

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I'm binding data table to datagrid but i'm not sure how to delete the empty cells in that data table

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VS 2008 Check If Datagridview Cells Are Empty?

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I've been searching around a lot to figure this out. I found some code that sort of works:

VB.NET
If String.IsNullOrEmpty(CStr(Me.dgvList.Rows(i).Cells(0).Value)) Then
End If

[code].....

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I'm writing a VB.NET program (VS 2005) that reads data from an XML document and writes it into a column in an excel spreadsheet. It's working fine, except for the following: after the first run, all the data appears as expected - for example

COLUMN
a
b

[code]......

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Disable Cells In VB Datagrid?

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1. How can i disable a cell of datagrid in vb.net

2. How can i show current date in datagrid cell

i have used this peace of code on form load event

[code]....

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[Code]...

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How can we disable a cell of datagrid in vb.net and how to show date in datagrid cell in vb.net

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Check Datagrid Is Empty?

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[code]... Check Datagrid Is Empty?

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How To Verify That Datagrid Is Not Empty

Mar 20, 2009

Im exporting a datagridview to excel but i want to check if this datagridview has any data before i allow the user to export.Heres some code,

data=datagridview, con.ejecutasql=oledb returns datatable.dt = con.ejecutaSql("SELECT * FROM sistema")data.DataSource = dtPrivate Sub print_excel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

[code].....

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Program Crashes When Datagrid View Is Empty?

Apr 13, 2012

my program crashes when my datagrid view is empty.

It crashes at this

M = Allow_grid.SelectedCells(1).Value

I know its because the grid is empty. when the grid is empty it has a "-1" as the selected value index right?

Is ther a way to test if the index is "-1".

if grid_selected index <> "-1" then
M = Allow_grid.SelectedCells(1).Value
else

[Code]....

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[Code]...

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I have a DataTable and want to connect the cells of one of its columns to cells in some other DataTables.

For example:

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...

How can I do this?

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[Code]...

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[Code]...

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If Request.Params("xxx") <> "" Then
'do something

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I have a array of strings and I am looping through them, but the string might be empty so I am trying this:

[Code]...

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Me.BindingSource.EndEdit()
Me.TableAdapter.Update(DataSet)

It says that update is not a member of the tableadapter... Why is that?

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