CODEWITHSUNDEEP
asp.netsqlvb.net
user3344443
user3344443

Reputation: 485

possible to convert string to GUID?

I have a dropdownlist selection, selected value will be ID, type is GUID, currently my code for the select button is 

Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click

    Dim Selection As String = Nothing

    If Not DropDownList3.SelectedValue Is Nothing Then Selection = DropDownList3.SelectedValue

    Session("Selected") = Selection

End Sub

then I have 

Dim ID is guid
ID = Session("Selected")

then i need to execute sql such as select * from .. where ID=.. Problem happens at ID = Session("Selected"), as ID is GUID, while Session("Selected") is string I wonder if there is a way to handle it? Thanks very much for help!

Upvotes: 1

Views: 1500

Answers (1)

kryptonkal
kryptonkal

Reputation: 894

Try this method:

GUID myGuid;
object myObj = Session("Selected");

if (myObj != null && Guid.TryParse(myObj.ToString(), out myGuid))
{
   //input is good, do stuff here
}
else
{
   //input is bad, handle error
}

I hope this helps. Good luck.

Upvotes: 4

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