Update image using Datalist control and Sqldatasource

Question

In the UpdateCommand event i am trying to update a image in Datalist edittemplate. The problem is bmpBytes is a byte array and sql updateparameter declaration<asp:Parameter Name="Data" DbType="Binary" /> will not accept it in this format only string. My database type is set to Image.
The system responds with cannot convert from string to image.

VanImagesSqlDataSource.UpdateParameters("Data").DefaultValue = bmpBytes
VanImagesSqlDataSource.Update()

Answer 1

Hi @peter liles ,
You can try setting parameters in an update event.
Maybe you can provide detailed error messages and codes.
https://learn.microsoft.com/en-us/dotnet/api/system.web.ui.webcontrols.sqldatasource.updating?redirectedfrom=MSDN&view=netframework-4.8

private void sqlDataSource_Updating(object sender, SqlDataSourceCommandEventArgs e)  
{  
    e.Command.Parameters["File"].Value = bytes;  
}  

Setting the update parameter type as Object

<UpdateParameters>         
<asp:Parameter Name="File" Type="Object" />  
</UpdateParameters>  

Best regards,
Youqi

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