Dropdown list seleceted value

Imran Bashir

10y930.NET

when i select the value from drop down these error come ...

input string was not in a correct format

Line 26:             int a = Convert.ToInt32(ddlAccount.SelectedValue);

plz help me.. thanks

6 Replies

Know the answer? Post it — somebody with the same question will find it here.

Imran Bashir10y ago
no the value in dropdown is int that coming from database that is the primary key im using this in page load event ...
0
Francis Susaimichael10y ago
I think either It is null or Non Integer number
@Ashiwani Sharma, the"Convert.ToInt32" will handleNULL values. So it is not an issue.I guess,the userwill try to pass the Non-Integer value.
0
Ashiwani Sharma10y ago
Hi Imran,
Debug your programm and check what value is coming on "ddlAccount.SelectedValue"
I think either It is null or Non Integer number.
0
Ravi Sangtani10y ago
Hi imran bashir
In Dropdown list your list value must be in number or digit like "568", "98746", etc.
If in Dropdown list any character or symbol is their in your string like "59r97", "78945#" etc.
It will give you error string was not in correct format.
If your string was empty then also it will give you error.
So your string should be in correct format in digit only not in character.
(Ravi D. Sangtani)
0
Francis Susaimichael10y ago
Most probably you will receive this error because you passed the value inside the "convert.ToInt32" function is not a valid one. Like you may pass a string with in that function like below:
intc=Convert.ToInt32("10a");
I got the same error for the above statement. I would suggest you, take a close look what is the value return by "ddlAccount.SelectedValue".
0
Krishna Rajput Singh10y ago
Thank you for writing below links i hope helpful for you..:)
http://www.aspdotnet-suresh.com/2015/06/set-dropdownlist-selected-value-text-in-aspnet-on-page-load-code-behind.html
http://stackoverflow.com/questions/1249394/how-to-select-a-dropdown-list-item-by-value-programatically
http://www.aspsnippets.com/Articles/Get-selected-value-of-HTML-Select-DropDownList-in-ASPNet-code-behind-using-C-and-VBNet.aspx
https://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.dropdownlist.selectedindex(v=vs.110).aspx
0