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GridPanel is not displaying " No Records Found" On Click of Button(ASP.NET) in full post back

  1. #1
    Jan 06, 2012, 8:18 AM

    GridPanel is not displaying " No Records Found" On Click of Button(ASP.NET) in full post back

    HI

    When i clicked on ASP.net button in asp dotnet page, if there are no records in datatable then grid is not displaying "no records found" message
    ==================================================
    E.g : 
    <%@ Page Language="C#" %>

<%@ 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">

<script runat="server">
public int CurrentYear = Convert.ToInt16(DateTime.Now.AddMonths(-1).Year);

private object[] strEmployee
{
get
{
return new object[]
{
new object[] { "1", "Test 1" },
new object[] { "2", "Test 2" },
new object[] { "3", "Test 3" }
};
}
}

protected void btnWithRecords_Click(object sender, EventArgs e)
{
this.Store1.DataSource = strEmployee;
this.Store1.DataBind();
}

protected void btnWithOutRecords_Click(object sender, EventArgs e)
{
this.Store1.RemoveAll();
}

protected void btnExtEvent_click(object sender, DirectEventArgs e)
{
this.Store1.RemoveAll();
}




</script>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server" style="padding: 30px">
<ext:ResourceManager ID="ResourceManager1" runat="server" />
<ext:GridPanel ID="GridPanel1" runat="server" AutoHeight="true" Width="250">
<Store>
<ext:Store ID="Store1" runat="server">
<Reader>
<ext:ArrayReader>
<Fields>
<ext:RecordField Name="EmployeeId" />
<ext:RecordField Name="Name" />
</Fields>
</ext:ArrayReader>
</Reader>
</ext:Store>
</Store>
<ColumnModel ID="ColumnModel1" runat="server">
<Columns>
<ext:Column Header="EmployeeId" DataIndex="EmployeeId" />
<ext:Column Header="Name" DataIndex="Name" />
</Columns>
</ColumnModel>
<View>
<ext:GridView ID="grdView" runat="server" EmptyText="No Records" />
</View>
</ext:GridPanel>
<asp:Button ID="btnWithRecords" runat="server" OnClick="btnWithRecords_Click" Text="With Records" />
<asp:Button ID="btnWithOutRecords" runat="server" OnClick="btnWithOutRecords_Click"
Text="With Out Records" />

<ext:Button ID="btnExtEvent" runat="server" Text="With Ext Event" >
<DirectEvents>
<Click OnEvent="btnExtEvent_click" />
</DirectEvents>
</ext:Button>
</form>
</body>
</html>

    Regards
    Praveen Nampally
    Last edited by Daniil; Jan 08, 2012 at 4:06 AM. Reason: Please use [CODE] tags
  2. #2
    Jan 06, 2012, 8:20 AM
    Can you provide some sample code to reproduce the problem
  3. #3
    Jan 06, 2012, 8:57 AM

    Example to above post 

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

<%@ 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">

<script runat="server">
    public int CurrentYear = Convert.ToInt16(DateTime.Now.AddMonths(-1).Year);

    private object[] strEmployee
    {
        get
        {
            return new object[]
            {
                new object[] { "1", "Test 1" },
                new object[] { "2", "Test 2" },
                new object[] { "3", "Test 3" }
            };
        }
    }

    protected void btnWithRecords_Click(object sender, EventArgs e)
    {
        this.Store1.DataSource = strEmployee;
        this.Store1.DataBind();
    }

    protected void btnWithOutRecords_Click(object sender, EventArgs e)
    {
        this.Store1.RemoveAll();
    }
    
    protected void btnExtEvent_click(object sender, DirectEventArgs e)
    {
        this.Store1.RemoveAll();
    }
    
    
    
    
</script>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server" style="padding: 30px">
    <ext:ResourceManager ID="ResourceManager1" runat="server" />
    <ext:GridPanel ID="GridPanel1" runat="server" AutoHeight="true" Width="250">
        <Store>
            <ext:Store ID="Store1" runat="server">
                <Reader>
                    <ext:ArrayReader>
                        <Fields>
                            <ext:RecordField Name="EmployeeId" />
                            <ext:RecordField Name="Name" />
                        </Fields>
                    </ext:ArrayReader>
                </Reader>
            </ext:Store>
        </Store>
        <ColumnModel ID="ColumnModel1" runat="server">
            <Columns>
                <ext:Column Header="EmployeeId" DataIndex="EmployeeId" />
                <ext:Column Header="Name" DataIndex="Name" />
            </Columns>
        </ColumnModel>
        <View>
            <ext:GridView ID="grdView" runat="server" EmptyText="No Records" />
        </View>
    </ext:GridPanel>
    <asp:Button ID="btnWithRecords" runat="server" OnClick="btnWithRecords_Click" Text="With Records" />
    <asp:Button ID="btnWithOutRecords" runat="server" OnClick="btnWithOutRecords_Click"
        Text="With Out Records" />
        
        <ext:Button ID="btnExtEvent" runat="server" Text="With Ext Event" >
        <DirectEvents>
            <Click OnEvent="btnExtEvent_click" />
        </DirectEvents>
        </ext:Button>
    </form>
</body>
</html>
    Last edited by Daniil; Jan 06, 2012 at 10:28 AM. Reason: Please use [CODE] tags
  4. #4
    Jan 06, 2012, 10:27 AM
    Hi,

    Yes, providing a sample to reproduce would be best, because I was unable to reproduce the problem using the example below.

    Example
    <%@ Page Language="C#" %>
 
<%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %>
<script runat="server">
    protected void DataBind(object sender, EventArgs e)
    {
        this.Store1.DataSource = new object[] 
            { 
                new object[] { "test1", "test2", "test3" },
                new object[] { "test4", "test5", "test6" },
                new object[] { "test7", "test8", "test9" }
            };
        this.Store1.DataBind();   
    }
</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:GridPanel runat="server" AutoHeight="true">
            <Store>
                <ext:Store ID="Store1" runat="server">
                    <Reader>
                        <ext:ArrayReader>
                            <Fields>
                                <ext:RecordField Name="test1" />
                                <ext:RecordField Name="test2" />
                                <ext:RecordField Name="test3" />
                            </Fields>
                        </ext:ArrayReader>
                    </Reader>
                </ext:Store>
            </Store>
            <ColumnModel runat="server">
                <Columns>
                    <ext:Column Header="Test1" DataIndex="test1" />
                    <ext:Column Header="Test2" DataIndex="test2" />
                    <ext:Column Header="Test3" DataIndex="test3" />
                </Columns>
            </ColumnModel>
        </ext:GridPanel>
        <asp:Button runat="server" Text="DataBind" OnClick="DataBind" />
    </form>
</body>
</html>
    Last edited by Daniil; Jan 08, 2012 at 4:07 AM.
  5. #5
    Jan 06, 2012, 10:32 AM
    Thanks for the sample.

    I'm not sure why you are expecting a grid to be data bound on the "btnWithOutRecords" button click.

    Two handlers with 
    this.Store1.RemoveAll();
    are executed when this button is clicked.
  6. #6
    Jan 06, 2012, 10:58 AM

    In Ext button Event grid show " No Records" , but in aspnet button it does not show "No Records"... Can you Please provide sol 

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

<script runat="server">
    protected void DataBind(object sender, EventArgs e)
    {
        this.Store1.RemoveAll();
    }

    protected void Button2_CLICK(object SENDER, DirectEventArgs E)
    {
        this.Store1.RemoveAll();
    }
</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 id="Head1" runat="server">
    <title>Ext.NET Example</title>
</head>
<body>
    <form id="Form1" runat="server" style="padding:20px">
    <ext:ResourceManager ID="ResourceManager1" runat="server" />
    <ext:GridPanel ID="GridPanel1" runat="server" AutoHeight="true" Width="250">
        <Store>
            <ext:Store ID="Store1" runat="server">
                <Reader>
                    <ext:ArrayReader>
                        <Fields>
                            <ext:RecordField Name="test1" />
                            <ext:RecordField Name="test2" />
                            <ext:RecordField Name="test3" />
                        </Fields>
                    </ext:ArrayReader>
                </Reader>
            </ext:Store>
        </Store>
        <ColumnModel ID="ColumnModel1" runat="server">
            <Columns>
                <ext:Column Header="Test1" DataIndex="test1" />
                <ext:Column Header="Test2" DataIndex="test2" />
                <ext:Column Header="Test3" DataIndex="test3" />
            </Columns>
        </ColumnModel>
        <View>
            <ext:GridView ID="GridView1" runat="server" EmptyText="No Records" />
        </View>
    </ext:GridPanel>
    <asp:Button ID="Button1" runat="server" Text="Asp Dot Net Event" OnClick="DataBind" />
  
    <ext:Button ID="Button2" runat="server" Text="Ext Event">
        <DirectEvents>
            <Click OnEvent="Button2_CLICK" />
        </DirectEvents>
    </ext:Button>
    </form>
</body>
</html>
    Last edited by Daniil; Jan 08, 2012 at 3:53 AM. Reason: Please use [CODE] tags
  7. #7
    Jan 08, 2012, 4:06 AM
    You should not bind a Store with a data or bind it again with an empty data during a common ASP.NET event.

    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.Store1.DataSource = new object[] 
            { 
                new object[] { "test1", "test2", "test3" },
                new object[] { "test4", "test5", "test6" },
                new object[] { "test7", "test8", "test9" },
            };
            this.Store1.DataBind();
        }
    }

    protected void ApsNetClick(object sender, EventArgs e)
    {
        this.Store1.DataSource = new object[] { };
        this.Store1.DataBind();
    }

    protected void DirectEventClick(object sender, DirectEventArgs e)
    {
        this.Store1.RemoveAll();
    }
</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:GridPanel runat="server" AutoHeight="true" Width="250">
            <Store>
                <ext:Store ID="Store1" runat="server">
                    <Reader>
                        <ext:ArrayReader>
                            <Fields>
                                <ext:RecordField Name="test1" />
                                <ext:RecordField Name="test2" />
                                <ext:RecordField Name="test3" />
                            </Fields>
                        </ext:ArrayReader>
                    </Reader>
                </ext:Store>
            </Store>
            <ColumnModel runat="server">
                <Columns>
                    <ext:Column Header="Test1" DataIndex="test1" />
                    <ext:Column Header="Test2" DataIndex="test2" />
                    <ext:Column Header="Test3" DataIndex="test3" />
                </Columns>
            </ColumnModel>
            <View>
                <ext:GridView 
                    runat="server" 
                    EmptyText="No Records" 
                    DeferEmptyText="false" />
            </View>
        </ext:GridPanel>
        <asp:Button runat="server" Text="Asp Dot Net Event" OnClick="ApsNetClick" />
   
        <ext:Button runat="server" Text="Ext Event" OnDirectClick="DirectEventClick" />
    </form>
</body>
</html>

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