[RESOLVED] Select one combox box item another combo box is triggered

[dr223]

Hi,

I am working with Vb.Net and have 2 combo boxes..

cmbchngcrt and cmbmgrname..

Both combo boxes are data binded and have a dropdownlist with the list read from SQL DB.

Now, when I select a value "website" from cmbchngcrt, I want to do 2 things;

1) select the value "Ready for Update" from cmbmgrname dropdownlist. Then
2) Disable cmbmgrname

How can I achieve this please..

Thanks

[kebo]

Put the following code in the cmbchgcrt.selectedItem_changed event handler....

If cmbchngcrt.selecteditems = "website" then
    cmbmgrname.selecteditem = "Ready for Update"
    cmbmgrname.enabled = false
endif

you should probably add something to the code for when the selection is not website to maybe enable the combobox.

[dr223]

First, I dont have cmbchgtyp.selecteditem_changed event handler instead I have cmbchgtyp_selectedindexchanged.

Secondly,

added in the selectedindexchanged event handler

If cmbchngcrt.selecteditems = "website" then
    cmbmgrname.selecteditem = "Ready for Update"
    cmbchngcrt.enabled = false
endif

the first two lines are underlined in Blue - denoting errors..

Any help pls

[kebo]

First, I dont have cmbchgcrt.selecteditem_changed event handler instead I have cmbchgtyp_selectedindexchanged.

If you want stuff to happen when the value in cmbchngcrt changes then you need to put the code in the cmbchngcrt change handler. Either the selectedIndex_Changed or selectedItem_Changed would work.

the first two lines are underlined in Blue - denoting errors..

Any help pls

It kind of depends on the errors. I have a good idea about what they might be. What are the errors?
kevin

[dr223]

Error 1:
Property 'SeletectedItem' is 'ReadOnly'

Error 2:
Value of type 'System.Web.UI.WebControls.ListItem' cannot be converted to 'String'


Thanks

[dr223]

any help please

[kebo]

First, the code I gave you has a syntax error.... it should be

If cmbchngcrt.selecteditem = "website" then
    cmbmgrname.selecteditem = "Ready for Update"
    cmbchngcrt.enabled = false
endif

not

If cmbchngcrt.selecteditemS = "website" then
    cmbmgrname.selecteditem = "Ready for Update"
    cmbchngcrt.enabled = false
endif

but that has nothing to do with your errors which are not the errors I thought you were having.

Second,
The first line of the MSDN Remarks section of the comboBox states

When you set the SelectedItem property to an object...

That says that the SelectedItem property of the comboBox is not ReadOnly but can also be written to. Are you sure you are using a combobox?

Third,
Why are you getting an error related to a System.Web.UI.WebControls.ListItem? You have not mentioned anything about a web control. Is that what you are using?

[dr223]

Hey,

This is what I have on the asp page for the combo box --

 <asp:DropDownList ID="cmbchngtyp" runat="server" CssClass="combo" DataSourceID="ChangeTypeDataSource"
                                        DataTextField="TypeDesc" DataValueField="TypeDesc" AppendDataBoundItems="True">
                                        <asp:ListItem Value="-1">Please Select</asp:ListItem>
                                    </asp:DropDownList>
                                    <asp:SqlDataSource ID="ChangeTypeDataSource" runat="server" ConnectionString="<%$ ConnectionStrings:CCMSConnectionString %>"
                                        SelectCommand="SELECT [TypeDesc] FROM [TblChangeType] ORDER BY [TypeDesc]"></asp:SqlDataSource>
                                    <asp:RequiredFieldValidator ID="RequiredFieldValidator5" runat="server" InitialValue="-1" ErrorMessage="RequiredFieldValidator"
                                        ControlToValidate="cmbchngtyp" Text="Change Type is required" CssClass="fieldmax"></asp:RequiredFieldValidator>
<asp:Label ID="Label51" runat="server" Text="test1"></asp:Label>

So, on the vb page as a test I wanted to check if I change the cmbchngtyp - Label51 should display the text = This is a Text

Protected Sub cmbchngtyp_SelectedIndexChanged(sender As Object, e As EventArgs) Handles cmbchngtyp.SelectedIndexChanged

		Label51.Text = "This is a TEST"

	End Sub

This is not working and at runtime if I change the cmbchngtyp value the text DOES NOT change..

Any help please

[dr223]

Ok - AutoPostBack = TRUE was required now I can change the text of the label if the cmbchngTyp selected item is changed.

All working thanks