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Comparison with DropDownList SelectedValue
Message
From
28/01/2011 06:23:47
 
General information
Forum:
ASP.NET
Category:
Coding, syntax and commands
Miscellaneous
Thread ID:
01497545
Message ID:
01497615
Views:
31
Thanks.

>Single quoation mark in C# means, that this is char[1] type and not a string. All strings should be in double quotation marks. Only when you need to declare a single char you use single quote.
>
>>Sorry, I was probably a bit confusing in my message. I tried this first:
>>
>>
if (this.cboStatus.SelectedValue == 11 || this.cboStatus.SelectedValue == 7)
>>
>>which didn't work because SelectedValue is apparently a string. I thought it would have been an int as it was bound to an int value.
>>
>>So I then tried this:
>>
>>
if (this.cboStatus.SelectedValue == '11' || this.cboStatus.SelectedValue == '7')
>>
>>Which didn't work either.
>>
>>I eventually got it right with this:
>>
>>
if (this.cboStatus.SelectedValue == "11" || this.cboStatus.SelectedValue == "7")
>>
>>So, it seems that single and double quotation marks are not interchangeable in C# as they are in VFP. Is that correct?
>>
>>
>>
>>>Looks like you need to cast the two strings as ints : (int)"11", no?
>>>
>>>
>>>>Hi,
>>>>
>>>>I want to compare the SelectedValue of a Drop Down List with a status value, but I'm getting this error:
>>>>
>>>>Operator '==' cannot be applied to operands of type 'string' and 'int
>>>>
>>>>My code is:
>>>>
>>>>UPDATE: changed the next line to include "" marks and got it fixed, I had been using single quotations and that wasn't working
>>>>
            if (this.cboStatus.SelectedValue == "11" || this.cboStatus.SelectedValue == "7")
>>>>            {
>>>>                this.lblDeathDate.Visible = true;
>>>>                this.txtDeathDate.Visible = true;
>>>>                this.btnDisplayDeathDateCalendar.Visible = true;
>>>>            }
>>>>
>>>>My DropDownList definition is:
>>>>
>>>>
                            <mm:mmDropDownList ID="cboStatus" runat="server" BindingSource="Status" BindingSourceDisplayMember="Status"
>>>>                                BindingSourceValueMember="StatusPK" BindingValueSource="Policy" BindingValueSourceMember="StatusFK"
>>>>                                Enabled="False" AutoPostBack="true" OnTextChanged="cboStatus_TextChanged">
>>>>                            </mm:mmDropDownList>
>>>>
>>>>
>>>>What do I need to do to compare this?
Frank.

Frank Cazabon
Samaan Systems Ltd.
www.samaansystems.com
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