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Readonly ?

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ComboBox

This is a migrated thread and some comments may be shown as answers.

27 Answers, 1 is accepted

answered on 28 May 2009, 11:59 AM

Hi Lenny_shp,

Please find below a sample code snippet that shows the needed approach.

    
            <html xmlns="http://www.w3.org/1999/xhtml">  
        
            <head runat="server">  
        
                <title></title>  
        
                <style type="text/css">  
        
                .RadComboBox_Outlook .rcbDisabled td.rcbInputCellLeft  
        
                {  
        
                    background-image: none !important;  
        
                    background-color: InactiveBorder;  
        
                }  
        
                </style> 
        
            </head> 
        
            <body> 
        
                <form id="form1" runat="server">  
        
                <telerik:RadScriptManager ID="RadScriptManager1" runat="server">  
        
                </telerik:RadScriptManager> 
        
                <telerik:RadComboBox ID="RadComboBox1" runat="server" Skin="Outlook" Enabled="false">  
        
                    <Items> 
        
                        <telerik:RadComboBoxItem runat="server" Text="RadComboBoxItem2" Value="RadComboBoxItem2" /> 
        
                        <telerik:RadComboBoxItem runat="server" Text="RadComboBoxItem3" Value="RadComboBoxItem3" /> 
        
                        <telerik:RadComboBoxItem runat="server" Text="RadComboBoxItem4" Value="RadComboBoxItem4" /> 
        
                    </Items> 
        
                </telerik:RadComboBox> 
        
                <asp:TextBox runat="server" Enabled="false">tetete</asp:TextBox> 
        
                </form> 
        
            </body> 
        
            </html>

Best wishes,
Paul
the Telerik team

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answered on 02 Oct 2009, 11:22 AM

Hello Stuart,

Here's a sample code snippet that shows the needed approach.

    
            <html xmlns="http://www.w3.org/1999/xhtml"> 
        
            <head runat="server"> 
        
                <title></title> 
        
                <style type="text/css"> 
        
                    .RadComboBox_Vista .rcbDisabled .rcbInputCell .rcbInput, 
        
                    .RadComboBoxDropDown_Vista .rcbDisabled 
        
                    { 
        
                        filter: none !important; 
        
                        opacity: 1 !important; 
        
                        color: Red !important; 
        
                    } 
        
                </style> 
        
            </head> 
        
            <body> 
        
                <form id="form1" runat="server"> 
        
                <telerik:RadScriptManager ID="RadScriptManager1" runat="server"> 
        
                </telerik:RadScriptManager> 
        
                <telerik:RadComboBox runat="server" ID="RadComboBox1" Skin="Vista"> 
        
                    <Items> 
        
                        <telerik:RadComboBoxItem runat="server" Text="RadComboBoxItem1" Value="RadComboBoxItem1" 
        
                            Enabled="false" /> 
        
                        <telerik:RadComboBoxItem runat="server" Text="RadComboBoxItem2" Value="RadComboBoxItem2" 
        
                            Enabled="false" /> 
        
                        <telerik:RadComboBoxItem runat="server" Text="RadComboBoxItem3" Value="RadComboBoxItem3" /> 
        
                    </Items> 
        
                </telerik:RadComboBox> 
        
                </form> 
        
            </body> 
        
            </html>

Greetings,
Paul
the Telerik team

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answered on 20 May 2010, 01:16 PM

Hi Kris Ivanov,

Since the read-only state of RadComboBox depends on various different behaviors (allowing custom text, client-side highlighting, Load On Demand) introducing yet another property will add only unnecessary confusion.

Currently, RadComboBox is read-only by default. Setting any of the AllowCustomText, MarkFirstMatch, Enable(Automatic)LoadOnDemand to true will disable this.

Best wishes,
Simon
the Telerik team

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answered on 24 Jun 2010, 02:26 PM

Current approach however there is a slight blank line within the border and the textbox itself I think it's attributed to this.

.Style = "margin-top:-1px;margin-bottom:-1px"

I tried to set additional properties but they do not affect it.

.EnableEmbeddedSkins = False
.EnableEmbeddedBaseStylesheet = False
.DropDownCssClass = String.Empty

    
                Private Sub DisableRadCombobox(ByVal cntrl As RadComboBox) 
        
                    With cntrl 
        
                        .ShowToggleImage = False 
        
                        .AllowCustomText = False 
        
                        .MarkFirstMatch = False 
        
                        .EnableTextSelection = False 
        
                        .EnableLoadOnDemand = False 
        
                        .BackColor = Drawing.Color.Gainsboro 
        
                        '.ForeColor = Drawing.Color.Black   'This doesn't do anything for IE 
        
                        .ShowDropDownOnTextboxClick = False 
        
                        .Skin = String.Empty    'important 
        
                        .AutoPostBack = False 
        
                        '.Enabled = False   'Note: due to RadComboBox's rendering for disabled we left it enabled with selected item only 
        
                        Dim tmpItem As RadComboBoxItem = .SelectedItem 
        
                        .Items.Clear() 
        
                        If tmpItem IsNot Nothing Then 
        
                            .Items.Clear() 
        
                            .Items.Add(tmpItem) 
        
                            tmpItem.Selected = True 
        
                        End If 
        
                    End With 
        
                End Sub

answered on 06 Jul 2010, 10:14 AM

Hi Lenny_shp,

Thank you for the screenshot.

So I tried reproducing this with the latest version of Telerik.Web.UI and this RadComboBox:

<telerik:RadComboBox ID="RadComboBox1" runat="server" BackColor="Gainsboro" ShowDropDownOnTextboxClick="false"

Skin="">

</telerik:RadComboBox>

without success.

What I see is the same as the first RCB in your screenshot.

Please let me know the exact version of the Telerik.Web.UI assembly that you use as it may be older and having the bug (which we probably have fixed later).

Best wishes,
Simon
the Telerik team

answered on 24 Nov 2010, 02:07 PM

Hi Kris Ivanov,

After reconsidering the possibility of adding the ReadOnly property we came up with a solution you can use now to achieve the required state. You can handle the client-side Load event of the RadComboBox in this way:

function onLoad(sender) {

var input = sender.get_inputDomElement();

input.readOnly = true;

$telerik.$(input).keydown(function (e) { return false; });

sender.add_dropDownOpening(function (s, e) { e.set_cancel(true); });

}

I hope this helps.

Kind regards,
Simon
the Telerik team

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answered on 25 Nov 2011, 09:28 AM

I tried your solution but i think my "enabling" of combo box does not work correctly.
Well, the drop down gets enabled but the keydown part didn't.
here's my code:

function setRadComboBoxReadOnly(sender, isReadOnly) {

var input;

if (isReadOnly) {

input = sender.get_inputDomElement();

input.readOnly = true;

window.$telerik.$(input).keydown(function(e) { return false; });

sender.add_dropDownOpening(function(s, e) { e.set_cancel(true); });

} else {

input = sender.get_inputDomElement();

input.readOnly = false;

window.$telerik.$(input).keydown(function (e) { return true; });

sender.add_dropDownOpening(function (s, e) { e.set_cancel(false); });

}

answered on 27 Jan 2014, 08:42 PM

I put the following code into my code behind to create an effective "readonly" mode for the radcombobox. While I am aware of the many modes the box can be used in, I don't see why there would be consitency issues implementing what I did here in code behind as a standard behaviour for ".ReadOnly" as a property

/// <summary>

/// Makes page readonly

/// </summary>

private void MakeReadOnly()

{

btnSubmit.Visible = false;

btnAutoFill.Visible = false;

sdDocuments.DisableDelete = true;

btnScan.DisableScanning = true;

foreach(Control Ctrl in Controls) {

if (Ctrl.GetType().ToString().Equals("System.Web.UI.WebControls.TextBox"))

((TextBox)Ctrl).ReadOnly = true;

if (Ctrl.GetType().ToString().Equals("Telerik.Web.UI.RadComboBox"))

((RadComboBox)Ctrl).AllowCustomText = ((RadComboBox)Ctrl).MarkFirstMatch = ((RadComboBox)Ctrl).EnableLoadOnDemand = ((RadComboBox)Ctrl).ShowDropDownOnTextboxClick = ((RadComboBox)Ctrl).EnableAutomaticLoadOnDemand =

false;

}

}//End private void MakeReadOnly(...

answered on 11 Jul 2017, 07:21 PM

step1.png

step2.png

step3.png

Hi telerik

I have a question; I am using a radcombobox, I setup the "markFirstMatch" as true but it has the following behavior:

1.If you click over the button with the arrow the options list is shown and the cursor is positioned at the beginning of the selected item text.

2. Then if you hit a click over the selected item area (not in the button with the arrow) the text on this area is highlighted and the options list is shown.

3. Now if you click again over the button with the arrow, you will see that the text on the selected item area is highlighted that is not the same behavior from the step one.

My question is, is this a normal behavior? or it is a way if you click over the selected item area o radcombobox button the text is highlighted? we have the "Marckfirstmatch" property set to true as the user types the initial letters of the option he wants to select, the list of options changes and is positioned over the one that matches what the user is typing; But if we put the property in false, the list of options only takes into account the first letter and is positioned on the first option that finds with that letter.

In other words, it is possible to have " markfirstmatch="true" " and also select the text of selected item if you click over the selected item area or in the button.

I'm using the following code for the radcombobox.

<telerik:RadComboBox
ID="idxCLIENTID"
Width="270px"
MarkFirstMatch="true"
AllowCustomText="false"
runat="server"
RenderMode="Lightweight"
CausesValidation="False"
AutoPostBack="True">

<Items>
<telerik:RadComboBoxItem runat="server" Text="ANY" Value="ANY" />
<telerik:RadComboBoxItem runat="server" Text="all" Value="all" />
<telerik:RadComboBoxItem runat="server" Text="alvaro" Value="alvaro" />
<telerik:RadComboBoxItem runat="server" Text="juan" Value="juan" />
<telerik:RadComboBoxItem runat="server" Text="carlos" Value="carlos" />
<telerik:RadComboBoxItem runat="server" Text="allan" Value="allan" />
<telerik:RadComboBoxItem runat="server" Text="carla" Value="carla" />
<telerik:RadComboBoxItem runat="server" Text="julia" Value="julia" />
<telerik:RadComboBoxItem runat="server" Text="Martha" Value="Martha" />
<telerik:RadComboBoxItem runat="server" Text="alicia" Value="alicia" />
<telerik:RadComboBoxItem runat="server" Text="mauricio" Value="mauricio" />
</Items>
</telerik:RadComboBox>

Thanks.

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Readonly ?

27 Answers, 1 is accepted