In this article I will explain with example how to perform select, insert, edit, update, delete in Repeater control in ASP.Net using C# and VB.Net.
This process is also known as CRUD i.e. Create, Read, Update and Delete in Repeater control with SQL Server database backend in ASP.Net.
 
 
Database
I have made use of the following table Customers with the schema as follows.
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I have already inserted few records in the table.
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Note: You can download the database table SQL by clicking the download link below.
          Download SQL file
 
 
HTML Markup
The HTML Markup consists of an ASP.Net Repeater control with multiple buttons for edit, update, cancel and delete operations.
The Delete button is assigned OnClientClick event for raising JavaScript confirmation box when a record is being deleted by the user.
The CustomerId field (Primary Key) is bound to a hidden Label control. The value of the CustomerId will be used for updating and deleting records.
Below the Repeater control there’s a Form which will allow us to insert data to the SQL Server database table.
<asp:Repeater ID="Repeater1" runat="server">
    <HeaderTemplate>
        <table cellspacing="0" rules="all" border="1">
            <tr>
                <th scope="col" style="width: 120px">
                    Name
                </th>
                <th scope="col" style="width: 100px">
                    Country
                </th>
                <th scope="col" style="width: 80px">
                </th>
            </tr>
    </HeaderTemplate>
    <ItemTemplate>
        <tr>
            <td>
                <asp:Label ID="lblCustomerId" runat="server" Text='<%# Eval("CustomerId") %>' Visible = "false" />
                <asp:Label ID="lblContactName" runat="server" Text='<%# Eval("Name") %>' />
                <asp:TextBox ID="txtContactName" runat="server" Width="120" Text='<%# Eval("Name") %>'
                    Visible="false" />
            </td>
            <td>
                <asp:Label ID="lblCountry" runat="server" Text='<%# Eval("Country") %>' />
                <asp:TextBox ID="txtCountry" runat="server" Width="120" Text='<%# Eval("Country") %>'
                    Visible="false" />
            </td>
            <td>
                <asp:LinkButton ID="lnkEdit" Text="Edit" runat="server" OnClick="OnEdit" />
                <asp:LinkButton ID="lnkUpdate" Text="Update" runat="server" Visible="false" OnClick="OnUpdate" />
                <asp:LinkButton ID="lnkCancel" Text="Cancel" runat="server" Visible="false" OnClick="OnCancel" />
                <asp:LinkButton ID="lnkDelete" Text="Delete" runat="server" OnClick="OnDelete" OnClientClick="return confirm('Do you want to delete this row?');" />
            </td>
        </tr>
    </ItemTemplate>
    <FooterTemplate>
        </table>
    </FooterTemplate>
</asp:Repeater>
<table border="1" cellpadding="0" cellspacing="0" style="border-collapse: collapse">
    <tr>
        <td style="width: 150px">
            Name:<br />
            <asp:TextBox ID="txtName" runat="server" Width="140" />
        </td>
        <td style="width: 150px">
            Country:<br />
            <asp:TextBox ID="txtCountry" runat="server" Width="140" />
        </td>
        <td style="width: 100px">
            <asp:Button ID="btnAdd" runat="server" Text="Add" OnClick="Insert" />
        </td>
    </tr>
</table>
 
 
Stored Procedure for Select, Insert, Update and Delete
The following stored procedure will be used to perform Select, Insert, Update and Delete operations on the SQL Server database table.
CREATE PROCEDURE [dbo].[Customers_CRUD]
      @Action VARCHAR(10)
      ,@CustomerId INT = NULL
      ,@Name VARCHAR(100) = NULL
      ,@Country VARCHAR(100) = NULL
AS
BEGIN
      SET NOCOUNT ON;
 
      --SELECT
    IF @Action = 'SELECT'
      BEGIN
            SELECT CustomerId, Name, Country
            FROM Customers
      END
 
      --INSERT
    IF @Action = 'INSERT'
      BEGIN
            INSERT INTO Customers(Name, Country)
            VALUES (@Name, @Country)
      END
 
      --UPDATE
    IF @Action = 'UPDATE'
      BEGIN
            UPDATE Customers
            SET Name = @Name, Country = @Country
            WHERE CustomerId = @CustomerId
      END
 
      --DELETE
    IF @Action = 'DELETE'
      BEGIN
            DELETE FROM Customers
            WHERE CustomerId = @CustomerId
      END
END
 
 
Namespaces
You will need to import the following namespaces.
C#
using System.Data;
using System.Configuration;
using System.Data.SqlClient;
 
VB.Net
Imports System.Data
Imports System.Configuration
Imports System.Data.SqlClient
 
 
Binding the Repeater with records from SQL Database Table
The Repeater control is populated from the database inside the Page Load event of the page. Here the stored procedure is being called with the Action parameter value as “SELECT”.
C#
protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        this.BindRepeater();
    }
}
 
private void BindRepeater()
{
    string constr = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
    using (SqlConnection con = new SqlConnection(constr))
    {
        using (SqlCommand cmd = new SqlCommand("Customers_CRUD"))
        {
            cmd.Parameters.AddWithValue("@Action", "SELECT");
            using (SqlDataAdapter sda = new SqlDataAdapter())
            {
                cmd.CommandType = CommandType.StoredProcedure;
                cmd.Connection = con;
                sda.SelectCommand = cmd;
                using (DataTable dt = new DataTable())
                {
                    sda.Fill(dt);
                    Repeater1.DataSource = dt;
                    Repeater1.DataBind();
                }
            }
        }
    }
}
 
VB.Net
Protected Sub Page_Load(sender As Object, e As EventArgs) Handles Me.Load
    If Not Me.IsPostBack Then
        Me.BindRepeater()
    End If
End Sub
 
Private Sub BindRepeater()
    Dim constr As String = ConfigurationManager.ConnectionStrings("constr").ConnectionString
    Using con As New SqlConnection(constr)
        Using cmd As New SqlCommand("Customers_CRUD")
            cmd.Parameters.AddWithValue("@Action", "SELECT")
            Using sda As New SqlDataAdapter()
                cmd.CommandType = CommandType.StoredProcedure
                cmd.Connection = con
                sda.SelectCommand = cmd
                Using dt As New DataTable()
                    sda.Fill(dt)
                    Repeater1.DataSource = dt
                    Repeater1.DataBind()
                End Using
            End Using
        End Using
    End Using
End Sub
 
ASP.Net Repeater CRUD: Select Insert Edit Update and Delete in Repeater using C# and VB.Net
 
 
Inserting records to Repeater
The following event handler is executed when the Add Button is clicked. The name and the country values are fetched from their respective TextBoxes and then passed to the Stored Procedure with Action parameter value as “INSERT”.
Finally the Repeater control is again populated with data by making call to the BindRepeater method.
C#
protected void Insert(object sender, EventArgs e)
{
    string name = txtName.Text;
    string country = txtCountry.Text;
    string constr = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
    using (SqlConnection con = new SqlConnection(constr))
    {
        using (SqlCommand cmd = new SqlCommand("Customers_CRUD"))
        {
            cmd.CommandType = CommandType.StoredProcedure;
            cmd.Parameters.AddWithValue("@Action", "INSERT");
            cmd.Parameters.AddWithValue("@Name", name);
            cmd.Parameters.AddWithValue("@Country", country);
            cmd.Connection = con;
            con.Open();
            cmd.ExecuteNonQuery();
            con.Close();
        }
    }
    this.BindRepeater();
}
 
VB.Net
Protected Sub Insert(sender As Object, e As EventArgs)
    Dim name As String = txtName.Text
    Dim country As String = txtCountry.Text
    Dim constr As String = ConfigurationManager.ConnectionStrings("constr").ConnectionString
    Using con As New SqlConnection(constr)
        Using cmd As New SqlCommand("Customers_CRUD")
            cmd.CommandType = CommandType.StoredProcedure
            cmd.Parameters.AddWithValue("@Action", "INSERT")
            cmd.Parameters.AddWithValue("@Name", name)
            cmd.Parameters.AddWithValue("@Country", country)
            cmd.Connection = con
            con.Open()
            cmd.ExecuteNonQuery()
            con.Close()
        End Using
    End Using
    Me.BindRepeater()
End Sub
 
 
Editing and Updating Repeater records
Edit
When the Edit Button is clicked, the following event handler is triggered. Here the reference of the Repeater item is determined and is passed to the ToggleElements method with the isEdit parameter passed as True.
When the isEdit parameter is passed as True, the ToggleElements method, hides the Label controls, Edit and Delete buttons and displays the TextBoxes, Update and Cancel buttons for the reference Repeater Item.
C#
protected void OnEdit(object sender, EventArgs e)
{
    //Find the reference of the Repeater Item.
    RepeaterItem item = (sender as LinkButton).Parent as RepeaterItem;
    this.ToggleElements(item, true);
}
 
private void ToggleElements(RepeaterItem item, bool isEdit)
{
    //Toggle Buttons.
    item.FindControl("lnkEdit").Visible = !isEdit;
    item.FindControl("lnkUpdate").Visible = isEdit;
    item.FindControl("lnkCancel").Visible = isEdit;
    item.FindControl("lnkDelete").Visible = !isEdit;
 
    //Toggle Labels.
    item.FindControl("lblContactName").Visible = !isEdit;
    item.FindControl("lblCountry").Visible = !isEdit;
 
    //Toggle TextBoxes.
    item.FindControl("txtContactName").Visible = isEdit;
    item.FindControl("txtCountry").Visible = isEdit;
}
 
VB.Net
Protected Sub OnEdit(sender As Object, e As EventArgs)
    'Find the reference of the Repeater Item.
    Dim item As RepeaterItem = TryCast(TryCast(sender, LinkButton).Parent, RepeaterItem)
    Me.ToggleElements(item, True)
End Sub
 
Private Sub ToggleElements(item As RepeaterItem, isEdit As Boolean)
    'Toggle Buttons.
    item.FindControl("lnkEdit").Visible = Not isEdit
    item.FindControl("lnkUpdate").Visible = isEdit
    item.FindControl("lnkCancel").Visible = isEdit
    item.FindControl("lnkDelete").Visible = Not isEdit
 
    'Toggle Labels.
    item.FindControl("lblContactName").Visible = Not isEdit
    item.FindControl("lblCountry").Visible = Not isEdit
 
    'Toggle TextBoxes.
    item.FindControl("txtContactName").Visible = isEdit
    item.FindControl("txtCountry").Visible = isEdit
End Sub
 
Update
When the Update Button is clicked, the following event handler is triggered.
CustomerId which is the primary key is fetched from the hidden Label control while the Name and Country fields are fetched from their respective TextBoxes and are passed to the Stored Procedure with Action parameter value as “UPDATE”.
C#
protected void OnUpdate(object sender, EventArgs e)
{
    //Find the reference of the Repeater Item.
    RepeaterItem item = (sender as LinkButton).Parent as RepeaterItem;
    int customerId = int.Parse((item.FindControl("lblCustomerId") as Label).Text);
    string name = (item.FindControl("txtContactName") as TextBox).Text.Trim();
    string country = (item.FindControl("txtCountry") as TextBox).Text.Trim();
 
    string constr = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
    using (SqlConnection con = new SqlConnection(constr))
    {
        using (SqlCommand cmd = new SqlCommand("Customers_CRUD"))
        {
            cmd.CommandType = CommandType.StoredProcedure;
            cmd.Parameters.AddWithValue("@Action", "UPDATE");
            cmd.Parameters.AddWithValue("@CustomerId", customerId);
            cmd.Parameters.AddWithValue("@Name", name);
            cmd.Parameters.AddWithValue("@Country", country);
            cmd.Connection = con;
            con.Open();
            cmd.ExecuteNonQuery();
            con.Close();
        }
    }
    this.BindRepeater();
}
 
VB.Net
Protected Sub OnUpdate(sender As Object, e As EventArgs)
    'Find the reference of the Repeater Item.
    Dim item As RepeaterItem = TryCast(TryCast(sender, LinkButton).Parent, RepeaterItem)
    Dim customerId As Integer = Integer.Parse(TryCast(item.FindControl("lblCustomerId"), Label).Text)
    Dim name As String = TryCast(item.FindControl("txtContactName"), TextBox).Text.Trim()
    Dim country As String = TryCast(item.FindControl("txtCountry"), TextBox).Text.Trim()
 
    Dim constr As String = ConfigurationManager.ConnectionStrings("constr").ConnectionString
    Using con As New SqlConnection(constr)
        Using cmd As New SqlCommand("Customers_CRUD")
            cmd.CommandType = CommandType.StoredProcedure
            cmd.Parameters.AddWithValue("@Action", "UPDATE")
            cmd.Parameters.AddWithValue("@CustomerId", customerId)
            cmd.Parameters.AddWithValue("@Name", name)
            cmd.Parameters.AddWithValue("@Country", country)
            cmd.Connection = con
            con.Open()
            cmd.ExecuteNonQuery()
            con.Close()
        End Using
    End Using
    Me.BindRepeater()
End Sub
 
Cancel Edit
When the Cancel Button is clicked, the following event handler is triggered. Here the reference of the Repeater item is determined and is passed to the ToggleElements method with the isEdit parameter passed as False.
When the isEdit parameter is passed as False, the ToggleElements method, hides the TextBox controls, Update and Cancel buttons and displays the Labels, Edit and Delete buttons for the reference Repeater Item.
C#
protected void OnCancel(object sender, EventArgs e)
{
    //Find the reference of the Repeater Item.
    RepeaterItem item = (sender as LinkButton).Parent as RepeaterItem;
    this.ToggleElements(item, false);
}
 
VB.Net
Protected Sub OnCancel(sender As Object, e As EventArgs)
    'Find the reference of the Repeater Item.
    Dim item As RepeaterItem = TryCast(TryCast(sender, LinkButton).Parent, RepeaterItem)
    Me.ToggleElements(item, False)
End Sub
 
ASP.Net Repeater CRUD: Select Insert Edit Update and Delete in Repeater using C# and VB.Net
 
 
Deleting Repeater records
When the Delete Button is clicked, the following event handler is triggered.
CustomerId which is the primary key is fetched from the hidden Label control and is passed to the Stored Procedure along with the Action parameter value as “DELETE”.
C#
protected void OnDelete(object sender, EventArgs e)
{
    //Find the reference of the Repeater Item.
    RepeaterItem item = (sender as LinkButton).Parent as RepeaterItem;
    int customerId = int.Parse((item.FindControl("lblCustomerId") as Label).Text);
 
    string constr = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
    using (SqlConnection con = new SqlConnection(constr))
    {
        using (SqlCommand cmd = new SqlCommand("Customers_CRUD"))
        {
            cmd.CommandType = CommandType.StoredProcedure;
            cmd.Parameters.AddWithValue("@Action", "DELETE");
            cmd.Parameters.AddWithValue("@CustomerId", customerId);
            cmd.Connection = con;
            con.Open();
            cmd.ExecuteNonQuery();
            con.Close();
        }
    }
    this.BindRepeater();
}
 
VB.Net
Protected Sub OnDelete(sender As Object, e As EventArgs)
    'Find the reference of the Repeater Item.
    Dim item As RepeaterItem = TryCast(TryCast(sender, LinkButton).Parent, RepeaterItem)
    Dim customerId As Integer = Integer.Parse(TryCast(item.FindControl("lblCustomerId"), Label).Text)
 
    Dim constr As String = ConfigurationManager.ConnectionStrings("constr").ConnectionString
    Using con As New SqlConnection(constr)
        Using cmd As New SqlCommand("Customers_CRUD")
            cmd.CommandType = CommandType.StoredProcedure
            cmd.Parameters.AddWithValue("@Action", "DELETE")
            cmd.Parameters.AddWithValue("@CustomerId", customerId)
            cmd.Connection = con
            con.Open()
            cmd.ExecuteNonQuery()
            con.Close()
        End Using
    End Using
    Me.BindRepeater()
End Sub
 
ASP.Net Repeater CRUD: Select Insert Edit Update and Delete in Repeater using C# and VB.Net
 
 
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