how to set default image in asp.net

vishnu suresh

I have an asp.net web application in which the images from gridview is displayed on a label. I have used this code for displaying image in gridview

<img src='data:image/jpg;base64,<%# Eval("img") != System.DBNull.Value ? Convert.ToBase64String((byte[])Eval("img")) : string.Empty %>' alt="image" height="250px" width="275px"/>

ItemTemplate>

This code is used to display the image from gridview to the label.

Label2.Text = ((ITextControl)GridView1.Rows[0].Cells[55].Controls[0]).Text;

in my gridview some image field value are null. some products not have images in the database. So how can set a default image for the label when the image is null.

9 Replies

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Saineshwar Bageri11y ago
if you are using bytes from database then use image handler to display it please read this link

http://www.aspdotnet-suresh.com/2011/01/how-to-insert-images-into-database-and.html
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vishnu suresh11y ago
sir how can I use that
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vishnu suresh11y ago
sir how can I use that
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Saineshwar Bageri11y ago
Use server control of asp.net not html control
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vishnu suresh11y ago
Pls see my code, if there is no image it will display no image. I have set alt=no image. Instead of this how can I put an alternate image on this.

<img src='data:img/jpg;base64,<%# Eval("img") != System.DBNull.Value ? Convert.ToBase64String((byte[])Eval("img")) : string.Empty %>' alt= "no image" height="75px" width="100px"/>
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Saineshwar Bageri11y ago
In this event you will check the value which you are binding which is null or not .

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
if(label.text == string.empty)
{
img.src =" default image ";
}
else
{
img.src = database value;
}
}
}
Mark as answer if i had resolved issue
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vishnu suresh11y ago
could u pls explain
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Santhakumar Munuswamy11y ago
Hi Vishnu Suresh,

First, could you check image field coulmn data is null or empty then you can set the default image in codebehind rowdatabound event

Ex.

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
// wirte code here
}
}
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Saineshwar Bageri11y ago
You can check in RowDataBound event of gridview.

Check the value is blank or not if blank or null then apply default images
else what ever image coming from database.
0