Forms Data Controls :: Image To Hide If Gridiview Not Populated?
Feb 28, 2010
In my webpage there are some dropdown controls bounded by object datasource with postback= true.
By default there is a value (CurrentDate) selected in one of the dropdown.
To display data there is a gridivew.
When the page is loaded by default gridview is populated with some data as per currentdate.
In same page there is an image to export data to Excel. By default I mark this image's visible= false.
Therefore if the data is populated then the image should be visible to everyone to download data to Excel, if not populated then it should remain hide.
For this purpose I used this code:
[Code]....
But exactly don't know where to write above code. If I write in Page_Load event then on runtime it displays error that:
Value cannot be null.
Parameter name: Statement_Date
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[code]...
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I have the following code:
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using Oracle.DataAccess.Client; // ODP.NET Oracle managed provider
using Oracle.DataAccess.Types;
namespace MyTestApp {
public partial class _Default : System.Web.UI.Page {
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[Code]....
[Code]....
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[Code]....
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