Comments by Member 10419145 (Top 12 by date)

My coding in vb.net to retrieve image is:

Private Sub DataGridView1_CellClick(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView1.CellClick
Dim i As Integer
i = DataGridView1.CurrentRow.Index
If (i = DataGridView1.Rows.Count - 1) Then
Exit Sub
End If
Me.TextBox3.Text = DataGridView1.Item(1, i).Value
Me.TextBox4.Text = DataGridView1.Item(2, i).Value

Try
If Not IsDBNull(DataGridView1.Rows(e.RowIndex).Cells("Qimage").Value) Then


'Get image data from gridview column.



''Initialize image variable
Dim newImage As Image
'Read image data into a memory stream
Using ms As New MemoryStream(ReadFile(DataGridView1.Rows(e.RowIndex).Cells("Qimage").Value), 0, ReadFile(DataGridView1.Rows(e.RowIndex).Cells("Qimage").Value).Length)
ms.Write(ReadFile(DataGridView1.Rows(e.RowIndex).Cells("Qimage").Value), 0, ReadFile(DataGridView1.Rows(e.RowIndex).Cells("Qimage").Value).Length)

'Set image variable value using memory stream.
newImage = Image.FromStream(ms, True)
End Using

'set picture
PictureBox1.Image = newImage
End If

Catch ex As Exception
MessageBox.Show(ex.ToString())
End Try
End Sub



<pre lang="vb">Private Function ReadFile(ByVal sPath As String) As Byte()
'Initialize byte array with a null value initially.
Dim data As Byte() = Nothing

'Use FileInfo object to get file size.
Dim fInfo As New FileInfo(sPath)
Dim numBytes As Long = fInfo.Length

'Open FileStream to read file
Dim fStream As New FileStream(sPath, FileMode.Open, FileAccess.Read)

'Use BinaryReader to read file stream into byte array.
Dim br As New BinaryReader(fStream)

'When you use BinaryReader, you need to supply number of bytes to read from file.
'In this case we want to read entire file. So supplying total number of bytes.
data = br.ReadBytes(CInt(numBytes))
Return data
End Function</pre>

Hi,

I am new to asp.net and do not know how to use that can you please me?

On my Gridview I am getting only path of the image "C:\Documents and Settings\sathish.kumar\Desktop\RegIR_NEW\RegIR\bin\Debug\..\..\Images\5-Q-IMG.jpg" and on click of "select" link in the gridview. I must get the respective image in the image control


I tried this in Vb.net, on the Datagridview cell click event but that does not works here.

Can you help me in this?

Protected Sub GridView1_SelectedIndexChanged(ByVal sender As Object, ByVal e As EventArgs) Handles GridView1.SelectedIndexChanged

Try
If Not IsDBNull(GridView1.Rows(e.RowIndex).Cells("Qimage").Value) Then


'Get image data from gridview column.



''Initialize image variable
Dim newImage As Image
'Read image data into a memory stream
Using ms As New MemoryStream(ReadFile(GridView1.Rows(e.RowIndex).Cells("Qimage").Value), 0, ReadFile(GridView1.Rows(e.RowIndex).Cells("Qimage").Value).Length)
ms.Write(ReadFile(GridView1.Rows(e.RowIndex).Cells("Qimage").Value), 0, ReadFile(GridView1.Rows(e.RowIndex).Cells("Qimage").Value).Length)

'Set image variable value using memory stream.
newImage = Image.FromStream(ms, True)
End Using

'set picture
Image1.Image = newImage
End If

Catch ex As Exception
End Try


Private Function ReadFile(ByVal sPath As String) As Byte()
'Initialize byte array with a null value initially.
Dim data As Byte() = Nothing

'Use FileInfo object to get file size.
Dim fInfo As New FileInfo(sPath)
Dim numBytes As Long = fInfo.Length

'Open FileStream to read file
Dim fStream As New FileStream(sPath, FileMode.Open, FileAccess.Read)

'Use BinaryReader to read file stream into byte array.
Dim br As New BinaryReader(fStream)

'When you use BinaryReader, you need to supply number of bytes to read from file.
'In this case we want to read entire file. So supplying total number of bytes.
data = br.ReadBytes(CInt(numBytes))
Return data
End Function
On the click of "Select" in the gridview I need to get the Desired image in image control.

I tried this in Vb.net, on the Datagridview cell click event but that does not works here.

Can you help me in this?

On my Gridview I am getting only path of the image "C:\Documents and Settings\sathish.kumar\Desktop\RegIR_NEW\RegIR\bin\Debug\..\..\Images\5-Q-IMG.jpg" and on click of "select" link in the gridview. I must get the respective image in the image control


I tried this in Vb.net, on the Datagridview cell click event but that does not works here.

Can you help me in this?

Hi,

I tried this by Making the properties of Gridview "Auto Generate Select Button - True" and then I tried the below coding:

Protected Sub GridView1_SelectedIndexChanged(ByVal sender As Object, ByVal e As EventArgs) Handles GridView1.SelectedIndexChanged

TextBox1.Text = GridView1.SelectedRow.Cells[1].Text

TextBox2.Text = GridView1.SelectedRow.Cells[2].Text

TextBox3.Text = GridView1.SelectedRow.Cells[3].Text

TextBox4.Text = GridView1.SelectedRow.Cells[4].Text

TextBox5.Text = GridView1.SelectedRow.Cells[5].Text

TextBox6.Text = GridView1.SelectedRow.Cells[6].Text End Sub

In these 6 textboxs, textbox 1, 2, 4, 5 are integers.

In source code I have added:

<asp:GridView ID="GridView1" runat="server" onselectedIndexChanged="GridView1_SelectedIndexChanged" Width="529px"

style="margin-top: 0px" PageSize="3"

AllowPaging="True" BorderColor="White" BorderStyle="Ridge"

SelectedIndex="0" AutoGenerateSelectButton="True">

But in coding itself I got error that "Value of type
'System.Web.UI.WebControls.TableCellCollection' cannot be converted to 'String'." and "Identifier expected."

I tried yours and got the desired result.
If possible can you please tell me what "viewState("data") = ds.Tables(0)" is performing.

Because I try using "GridView1.DataSource = ds.Tables(0)" directly in the "GridView1_PageIndexChanging" without using "viewState("data") = ds.Tables(0)" in "button click"