c#, asp.net datalist - passing variables

Question

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Hello,

I am trying to check if session["username"] = something.
if so image link will be 'A' else will be 'B'.

here is my code:

XML

<asp:DataList ID="DataList1"
runat="server" ShowHeader="False" CellSpacing="2">
<HeaderTemplate>
Images ...
</HeaderTemplate>
<ItemStyle />
<ItemTemplate>
<asp:ImageButton ID="ImageButton1" runat="server"
ImageUrl='<%# Eval("image_path","~/Images/{0}")%>' style="padding: 2px;" Width="50px" Height="50px" />
</ItemTemplate>
</asp:DataList>

my c# code:

C#

con.Open();
cmd = new SqlCommand("select Image_path from table WHERE image_id = something ", con);
da = new SqlDataAdapter(cmd);
dt = new DataTable();
da.Fill(dt);
DataList1.DataSource = dt;
DataList1.DataBind();

// How do i write this ?

if (session["username"] == something)
{
  // Datalist.ImageButton1.ImageUrl = Eval("image_path","/location A")
}
else
{
  // Datalist.ImageButton1.ImageUrl = Eval("image_path","/location B")
}

Posted 20-Feb-14 23:11pm

Member 10210318

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Ahmed Bensaid · Accepted Answer · 2014-02-21T00:22:00

Solution 1

Try something like this ;)

C#

foreach (DataListItem item in myDataList.Items)
{
    ImageButton myImageButton = (ImageButton )item.FindControl("ImageButton1");
    if (session["username"] = something)
    {
        myImageButton.ImageUrl = ...
    }
    else
    {
        myImageButton.ImageUrl = ...
    }
}

Posted 21-Feb-14 0:22am

Ahmed Bensaid

Comments

Member 10210318 21-Feb-14 7:12am

Thanks a lot, let me check it up.

Member 10210318 21-Feb-14 7:43am

Ok, it is working fine, thanks.

is there a way to set the myImageButton.ImageUrl to show photos from two different locations ?
for example myImageButton.ImageUrl = ~/Images/{0}" and ~/Images_old/{0}" ?

Ahmed Bensaid 21-Feb-14 8:27am

You're welcome !
Leave your ImageUrl property empty in your markup.
And fill it only in your code behind ;)

Member 10210318 21-Feb-14 8:37am

ok, but how do i give two locations in the code ?

Ahmed Bensaid 21-Feb-14 9:03am

foreach (DataListItem item in myDataList.Items)
{
ImageButton myImageButton = (ImageButton )item.FindControl("ImageButton1");
if (session["username"] = something)
{
myImageButton.ImageUrl = "~/Images/your_image"
}
else
{
myImageButton.ImageUrl = "~/Images_old/your_image"
}
}

Member 10210318 21-Feb-14 9:18am

this one i got, but what if i need to assign two locations at the same time,

for example:
else { myImageButton.ImageUrl = "~/Drive C/your_image" + "~/Drive D/your_image" }

Ahmed Bensaid 21-Feb-14 9:39am

I think you can't do that ... What are your needs ?

Member 10210318 21-Feb-14 9:47am

i have to show photos from users upload folders that are organized by their names
for example D:\main users\user15232, D:\main users\user33659.
each folder has it own photos, and this photos are changing.

so i need to show from different locations.

Ahmed Bensaid 21-Feb-14 10:01am

Add a property userName, and fill it with the current user login.
Then you can add it to your image url like this :

foreach (DataListItem item in myDataList.Items)
{
ImageButton myImageButton = (ImageButton )item.FindControl("ImageButton1");
if (session["username"] = something)
{
myImageButton.ImageUrl = "~/" + userName + "/your_image"
}
else
{
myImageButton.ImageUrl = "~/" + userName + "/your_image"
}
}

Member 10210318 23-Feb-14 15:52pm

thanks, very good idea !

Ahmed Bensaid 23-Feb-14 16:31pm

You're welcome ;)

Manish Kumar Namdev · Accepted Answer · 2014-02-21T01:18:00

Hi try this

XML

<asp:DataList ID="dlList" runat="server" ShowHeader="False" CellSpacing="2" OnItemDataBound="dlListItemBinding">
        <ItemTemplate>
            <asp:ImageButton ID="ImageButton1" runat="server" style="padding: 2px;" Width="50px" Height="50px" />
        </ItemTemplate>
    </asp:DataList>

C#

protected void dlListItemBinding(object sender, DataListItemEventArgs e)
 {
  if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
  {
     if (Session["value"] == "A")
     {
 ((ImageButton)e.Item.FindControl("ImageButton1")).ImageUrl = "~/Image/ImageA.png"; // change the path here
     }
     else
     {
 ((ImageButton)e.Item.FindControl("ImageButton1")).ImageUrl = "~/Image/ImageB.png"; // change the path here
     }
  }
 }