Dynamically change ASP.Net Repeater Item value based on condition using C# and VB.Net

Tevin

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User: Tevin
Posted: on Jun 24, 2019 06:55 AM
Forum: Data Controls
Answer: 1
Views: 13232
Sample Code: Download

I have a repeater control that contains various labels inside relevant to an employee. The labels are populated from the database. I would like to know how to change the value of a row for example. If lblChestResults = "False" Then lblChestResults = "Abnormal".

            <asp:Repeater ID="RepeaterEmployee" runat="server" OnItemCommand="RepeaterEmployee_ItemCommand1">
                <ItemTemplate>
                    <table runat="server" class="table table-default table-striped table-bordered table-condensed">
                        <tr><td colspan="2" style="text-align:center;" ><asp:Image ID="Image1" runat="server" ImageAlign="Middle"  ImageUrl='<%# Eval("Photo") %>' /></td></tr>
                        <tr>
                            <td style="vertical-align:middle;">
                                <%--<asp:Image ID="EmployeePhoto" runat="server" ImageAlign="AbsMiddle"  ImageUrl='<%# Eval("Photo") %>' />--%>
                            </td>
                            <td>
                                <table runat="server" style="width:100%;">
                                    <tr>
                                        <td><b>First Name:</b></td>
                                        <td><asp:Label ID="FirstName" runat="server" Text='<%#Eval("FirstName") %>'></asp:Label></td>
                                    </tr>
                                    <tr>
                                        <td><b>Last Name:</b></td>
                                        <td><asp:Label ID="lblLastName" runat="server" Text='<%#Eval("LastName") %>'></asp:Label></td>
                                    </tr>
                                    <tr>
                                        <td><b>Employee Code:</b></td>
                                        <td><asp:Label ID="lblCode" runat="server" Text='<%#Eval("Code") %>'></asp:Label></td>
                                    </tr>
                                    <tr>
                                        <td><b>ID:</b></td>
                                        <td><asp:Label ID="lblEmployeeID" runat="server" Text='<%#Eval("EmployeeID") %>'></asp:Label></td>
                                    </tr>
                                    <tr>
                                        <td><b>Chest Results:</b></td>
                                        <td><asp:Label ID="lblChestResults" runat="server" Text='<%#Eval("ChestResults") %>'></asp:Label></td>
                                    </tr>
                                    <tr>
                                        <td><b>ECG Result:</b></td>
                                        <td><asp:Label ID="lblECGResult" runat="server" Text='<%#Eval("ECGResult") %>'></asp:Label></td>
                                    </tr>
                                    <tr>
                                        <td><b>Blood Glucose Result:</b></td>
                                        <td><asp:Label ID="lblBloodGlucoseResult" runat="server" Text='<%#Eval("BloodGlucoseResult") %>'></asp:Label></td>
                                    </tr>
                                    <tr>
                                        <td><b>GGT Result:</b></td>
                                        <td><asp:Label ID="lblGGTResult" runat="server" Text='<%#Eval("GGTResult") %>'></asp:Label></td>
                                    </tr>
                                    <tr>
                                        <td><b>Medical Report:</b></td>
                                        <td><asp:LinkButton ID="btnDownload" Text="Download Medical Report" OnClick="btnDownload_Click" CommandName="Download" CommandArgument='<%#Eval("MedicalCertificateID") %>' runat="server"></asp:LinkButton></td>
                                    </tr>
                                </table>
                            </td>
                        </tr>
                    </table>
                </ItemTemplate>
            </asp:Repeater>

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pandeyis...

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ANSWER
User: pandeyism
Replied: on Jun 24, 2019 07:18 AM
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Hi Tevin,

Refer below sample.

HTML

<asp:Repeater ID="Repeater1" runat="server" OnItemDataBound="Repeater1_ItemDataBound">
    <ItemTemplate>
        <table id="Table1" runat="server">
            <tr>
                <td>
                    <table id="Table2" runat="server" style="width: 100%;">
                        <tr>
                            <td>
                                <b>Name:</b>
                            </td>
                            <td>
                                <asp:Label ID="lblName" runat="server" Text='<%#Eval("Name") %>'></asp:Label>
                            </td>
                        </tr>
                        <tr>
                            <td>
                                <b>ID:</b>
                            </td>
                            <td>
                                <asp:Label ID="lblID" runat="server" Text='<%#Eval("ID") %>'></asp:Label>
                            </td>
                        </tr>
                        <tr>
                            <td>
                                <b>Country:</b>
                            </td>
                            <td>
                                <asp:Label ID="lblCountry" runat="server" Text='<%#Eval("Country") %>'></asp:Label>
                            </td>
                        </tr>
                    </table>
                </td>
            </tr>
        </table>
    </ItemTemplate>
</asp:Repeater>

Namespaces

using System.Data;

VB.Net

Imports System.Data

Code

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        DataTable dt = new DataTable();
        dt.Columns.AddRange(new DataColumn[3] { new DataColumn("ID", typeof(int)),
                        new DataColumn("Name", typeof(string)),
                        new DataColumn("Country",typeof(string)) });
        dt.Rows.Add(1, "John Hammond", "United States");
        dt.Rows.Add(2, "Mudassar Khan", "India");
        dt.Rows.Add(3, "Suzanne Mathews", "France");
        dt.Rows.Add(4, "Robert Schidner", "Russia");
        Repeater1.DataSource = dt;
        Repeater1.DataBind();
    }
}

protected void Repeater1_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
    if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
    {
        RepeaterItem item = e.Item;
        Label customerId = (item.FindControl("lblID") as Label);
        if (customerId.Text == "1")
        {
            customerId.Text = "One";
        }
    }
}

VB.Net

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
    If Not Me.IsPostBack Then
        Dim dt As DataTable = New DataTable()
        dt.Columns.AddRange(New DataColumn(2) {New DataColumn("ID", GetType(Integer)), New DataColumn("Name", GetType(String)), New DataColumn("Country", GetType(String))})
        dt.Rows.Add(1, "John Hammond", "United States")
        dt.Rows.Add(2, "Mudassar Khan", "India")
        dt.Rows.Add(3, "Suzanne Mathews", "France")
        dt.Rows.Add(4, "Robert Schidner", "Russia")
        Repeater1.DataSource = dt
        Repeater1.DataBind()
    End If
End Sub

Protected Sub Repeater1_ItemDataBound(ByVal sender As Object, ByVal e As RepeaterItemEventArgs)
    If e.Item.ItemType = ListItemType.Item OrElse e.Item.ItemType = ListItemType.AlternatingItem Then
        Dim item As RepeaterItem = e.Item
        Dim customerId As Label = (TryCast(item.FindControl("lblID"), Label))

        If customerId.Text = "1" Then
            customerId.Text = "One"
        End If
    End If
End Sub

Screenshot

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Dynamically change ASP.Net Repeater Item value based on condition using C# and VB.Net

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