Unable to delete record from gridview in C#

[MAGALY]

Hello to all,
I am new to this forum. I am working on project which is part of my syllabus. I am using C# language. I create gridview in my program. I able to add record to it, but unable to delete record from gridview . Whenever I click on delete link in the gridview I get 'can't cast object of type 'ASP.WForm1_aspx' to type "system.W.UI.WControls.GridviewRow'. I don't know what is that mean. Please help me.

[Praetor]

Hey you need to use Explicit conversions to fix this problem. Explicit conversions must requires a cast operator to fix this problem. As per my knowledge source and destination variables are very much compatible, but there is one problem. There is a high risk of information loss because the type of the destination variable is a smaller in size than the source variable.
In this case you have to use following variable in your program.
Gridview gv2 = (Gridview)sS!

[Katty]

class Test
{
static void Main()
{
double p = 4561.7;
int w;
// Cast double to int.
w = (int)p;
System.Console.WriteLine(w);
}
}
// Output: 4561

As like above example you have to use cast operator to fix this problem. You can do this in following ways.

Cast 'System.Web.UI.WebControls.GridviewRow'

GridView GRP=(GridView)SE;




Hi,

Try to type cast 'System.Web.UI.WebControls.GridviewRow'

GridView grd=(GridView)sender;
//type your code//

[kelfro]

As per my knowledge sender object is Gridview object and you have to cast it to GridView type in following ways.
GridView GRP=(GridView)SE
After this you have to get GridViewRow object by writing in following ways.
GridViewRow DR = this.GridView1.Rows[e.RI];
Now you will able to delete record from gridview.

[Zecho]

Have you check that deleteRecordFromServer method is being called by setting a breakpoint in there? And that RecordToDelete is being set correctly? If all these thing set wrong then first make correction in it. After that look at the 'watch' values for 'sender' and 'viewGrid'. Now see what kind of objects they are and what values they hold. Sometimes what happened that you have to traverse the object hierarchy in the GridVied control to get to the right object.