alternate image in gridview, datalist

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hi
i have a gridview
i display images in imagebutton
my one line coding is

XML

<asp:ImageButton ID="Image1" Height="50" Width="50" CommandName="ViewDetails" CommandArgument='<%#Eval("Reg_Id") %>'
                                ImageUrl='<%#Eval("profileimage") %>' AlternateText="No Image" runat="server" />

my questin is that
if image is not in database table then how can i display default image

means
that

if in database table "profileimage" collumn is null then i want to display a default image(images/face.png")
thanks

Posted 11-Apr-14 4:38am

Manish Dalwadi

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Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) · Answer 1 · 2014-04-11T04:51:00

Solution 1

Do like below...

HTML

ImageUrl='<%#AssignImage(Eval("profileimage").ToString()) %>'

And in code Behind...

C#

public string AssignImage(string profileimage)
{
    return !string.IsNullOrEmpty(profileimage) ? profileimage : "images/face.png";
}

Note: Make sure Default Image URL is correct.

Posted 11-Apr-14 4:51am

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

Updated 11-Apr-14 17:50pm

v2

Comments

Manish Dalwadi 11-Apr-14 11:59am

m sorry
i never done this type of coding...so please help me for solve this
its showing error..
.
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.

Compiler Error Message: CS0122: 'frm_admin_Edit_User_Details.AssignImage(string)' is inaccessible due to its protection level

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 11-Apr-14 23:50pm

Oops!!! Update the function access specifier to public. I am updating the answer now.

Manish Dalwadi 11-Apr-14 12:00pm

<telerik:gridtemplatecolumn xmlns:telerik="#unknown">
<itemtemplate>
<asp:ImageButton ID="Image1" Height="50" Width="50" CommandName="ViewDetails" CommandArgument='<%#Eval("Reg_Id") %>'
ImageUrl='<%# AssignImage(Eval("profileimage").ToString()) %>' AlternateText="No Image"
runat="server" />

Manish Dalwadi 11-Apr-14 12:00pm

private string AssignImage(string profileimage)
{
return !string.IsNullOrEmpty(profileimage) ? profileimage : "images/default_profile.png";
}

Rahul VB 12-Apr-14 2:45am

Hey Dash,
I just have one doubt: can you explain me the significance of :
!string.IsNullOrEmpty(profileimage) ?

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 12-Apr-14 3:09am

It just checks if the profileimage value is null or empty.

Rahul VB 12-Apr-14 4:28am

Ohhh very nice, thanks a ton.
-Rahul

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 12-Apr-14 13:50pm

Most welcome buddy. :)