[CLOSED] Multicombo Item format showing error while checking selected items

**rnachman** · Dec 26, 2011, 3:54 PM

Hi,

I have given multiline format for items in multi combo. After select some items clicked on button to verify selected items. It is throwing error like "A potentially dangerous Request.Form value was detected from the client ...". Can you please check it where I have to modify? Please check the attachment...

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<%@ Page Language="VB" AutoEventWireup="false" CodeFile="ExtMultiComboCheck.aspx.vb"
    Inherits="Testing_ExtMultiComboCheck" %>

<%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <ext:ResourceManager ID="ResourceManager1" runat="server" />
    <ext:MultiCombo ID="cboContents" runat="server">
    </ext:MultiCombo>
    <ext:Button ID="btnShowSelected" runat="server" Text="Show Selected" Width="400">
        <DirectEvents>
            <Click OnEvent="ShowAllSelected">
            </Click>
        </DirectEvents>
    </ext:Button>
    </form>
</body>
</html>

code behind...

Imports Ext.Net
Partial Class Testing_ExtMultiComboCheck
    Inherits System.Web.UI.Page

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        If Not Ext.Net.X.IsAjaxRequest Then
            Call LoadComboInfo()
        End If
    End Sub

    Public Sub LoadComboInfo()
        Dim i As Integer
        cboContents.Items.Clear()
        cboContents.Items.Add(New Ext.Net.ListItem("All", "0"))

        For i = 1 To 6
            cboContents.Items.Add(New Ext.Net.ListItem("Delivery Name: " & i & "<br>" & "Item_mail" & i & "@item.com" & "<br>&nbsp;&nbsp;&nbsp;&nbsp;" & "Item_mail" & i & "@item.com", i))
        Next
    End Sub

    Public Sub ShowAllSelected(ByVal sender As Object, ByVal e As DirectEventArgs)
        Dim selectedInfo As String = ""
        Dim i As Integer
        If cboContents.SelectedItems.Count > 0 Then
            If cboContents.SelectedItems.Count >= 1 And cboContents.SelectedItems(0).Value <> "0" Then
                For i = 0 To cboContents.SelectedItems.Count - 1
                    If cboContents.SelectedItems(0).Value <> "0" Then
                        selectedInfo = selectedInfo & cboContents.SelectedItems(i).Value & ","
                    End If
                Next
                selectedInfo = selectedInfo.Trim(",")
            End If
        Else
            selectedInfo = "x"
        End If

        Ext.Net.X.Msg.Alert("Selected Info", selectedInfo).Show()

    End Sub
End Class

**Daniil** · Dec 26, 2011, 5:26 PM

Hi,

Please look at this thread:
http://forums.ext.net/showthread.php?16295

If you will choose the option #2, you will need to send a MultiCombo's value manually.

**Daniil** · Dec 26, 2011, 5:44 PM

Here is the example for the option #2.

Please note how it's formatted - the code behind are placed directly into the aspx markup within:

<script runat="server">
    //code behind
</script>

and there is only Language in:

<%@ Page Language="C#" %>

The example below can be copied, pasted and launched without any changes.

Please format your code samples the same way.

Example

<%@ Page Language="C#" %>

<%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %>

<script runat="server">
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!X.IsAjaxRequest)
        {
            this.MultiCombo1.Items.Add(new Ext.Net.ListItem("<span>item 1</span>", "1"));
            this.MultiCombo1.Items.Add(new Ext.Net.ListItem("<div>item 2</div>", "2"));
            this.MultiCombo1.SelectAll();
        }
    }

    protected void Submit(object sender, DirectEventArgs e)
    {
        string values = HttpUtility.HtmlDecode(e.ExtraParams["values"]),
               r = "";
        List<Ext.Net.ListItem> items = JSON.Deserialize<List<Ext.Net.ListItem>>(values);

        foreach (Ext.Net.ListItem item in items)
        {
            r += HttpUtility.HtmlEncode(item.Text + " : " + item.Value) + "<br/>";
        }
        X.Msg.Alert("Submit", r).Show();
    }
</script>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Ext.NET Example</title>
</head>
<body>
    <form runat="server">
        <ext:ResourceManager runat="server" />
        <ext:MultiCombo ID="MultiCombo1" runat="server" SubmitValue="false" />
        <ext:Button runat="server" Text="Submit">
            <DirectEvents>
                <Click OnEvent="Submit">
                    <ExtraParams>
                        <ext:Parameter 
                            Name="values" 
                            Value="Ext.util.Format.htmlEncode(Ext.encode(MultiCombo1.getSelection()))" 
                            Mode="Raw" />
                    </ExtraParams>
                </Click>
            </DirectEvents>
        </ext:Button>
    </form>
</body>
</html>

**rnachman** · Dec 27, 2011, 3:15 PM

Hi Daniil,

Thank you. It is working. I didn't get you on the statement..."and there is only Language in:"

Originally Posted by Daniil

Here is the example for the option #2.

Please note how it's formatted - the code behind are placed directly into the aspx markup within:

<script runat="server">
    //code behind
</script>

and there is only Language in:

<%@ Page Language="C#" %>

The example below can be copied, pasted and launched without any changes.

Please format your code samples the same way.

Example

<%@ Page Language="C#" %>

<%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %>

<script runat="server">
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!X.IsAjaxRequest)
        {
            this.MultiCombo1.Items.Add(new Ext.Net.ListItem("<span>item 1</span>", "1"));
            this.MultiCombo1.Items.Add(new Ext.Net.ListItem("<div>item 2</div>", "2"));
            this.MultiCombo1.SelectAll();
        }
    }

    protected void Submit(object sender, DirectEventArgs e)
    {
        string values = HttpUtility.HtmlDecode(e.ExtraParams["values"]),
               r = "";
        List<Ext.Net.ListItem> items = JSON.Deserialize<List<Ext.Net.ListItem>>(values);

        foreach (Ext.Net.ListItem item in items)
        {
            r += HttpUtility.HtmlEncode(item.Text + " : " + item.Value) + "<br/>";
        }
        X.Msg.Alert("Submit", r).Show();
    }
</script>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Ext.NET Example</title>
</head>
<body>
    <form runat="server">
        <ext:ResourceManager runat="server" />
        <ext:MultiCombo ID="MultiCombo1" runat="server" SubmitValue="false" />
        <ext:Button runat="server" Text="Submit">
            <DirectEvents>
                <Click OnEvent="Submit">
                    <ExtraParams>
                        <ext:Parameter 
                            Name="values" 
                            Value="Ext.util.Format.htmlEncode(Ext.encode(MultiCombo1.getSelection()))" 
                            Mode="Raw" />
                    </ExtraParams>
                </Click>
            </DirectEvents>
        </ext:Button>
    </form>
</body>
</html>

**Daniil** · Dec 27, 2011, 3:25 PM

Originally Posted by rnachman

I didn't get you on the statement..."and there is only Language in:"

I meant that you can leave only Language property in Page statement and remove others like:

AutoEventWireup="false" 
CodeFile="ExtMultiComboCheck.aspx.vb"
Inherits="Testing_ExtMultiComboCheck"

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