Display Updated values in another View of ASP.Net MultiView control using C# and VB.Net

Hi Thuyai,

Check this example. Now please take its reference and correct your code.

Here i have used dynamic datatable to populate the record. You need to replace the datatable binding code from database.

HTML

<asp:ScriptManager runat="server" ID='sm1' EnablePartialRendering="false">
</asp:ScriptManager>
<asp:UpdatePanel runat="server" ID='up1'>
    <ContentTemplate>
        <asp:MultiView ID="mvPeview" runat="server" ActiveViewIndex="0" EnableTheming="True">
            <asp:View ID="vwSubmit" runat="server">
                Select Customer Name
                <asp:DropDownList ID="lstFullName" runat="server" AutoPostBack="true" OnSelectedIndexChanged="DropDownList1_SelectedIndexChanged">
                </asp:DropDownList>
                <br />
                Name:
                <asp:TextBox ID="txtName" runat="server" ReadOnly="true"></asp:TextBox>
                <br />
                Department:
                <asp:TextBox ID="txtDepartment" runat="server" OnTextChanged="UpdateCustomerList"
                    AutoPostBack="true"></asp:TextBox>
                <br />
                Phone:
                <asp:TextBox ID="txtPhone" runat="server" OnTextChanged="UpdateCustomerList" AutoPostBack="true"></asp:TextBox>
                <br />
                Email:
                <asp:TextBox ID="txtEmail" runat="server" OnTextChanged="UpdateCustomerList" AutoPostBack="true"></asp:TextBox>
                <br />
                Order:
                <asp:TextBox ID="txtOrder" runat="server" OnTextChanged="UpdateCustomerList" AutoPostBack="true"></asp:TextBox>
                Count:
                <asp:TextBox ID="txtCount" runat="server" OnTextChanged="UpdateCustomerList" AutoPostBack="true"></asp:TextBox>
                <br />
                <hr />
                Name:
                <asp:Label ID="lblName" runat="server"></asp:Label>
                <br />
                <asp:Label ID="lblDepartment" runat="server"></asp:Label>
                <br />
                <asp:Label ID="lblEmail" runat="server"></asp:Label>
                <br />
                <asp:Label ID="lblPhone" runat="server"></asp:Label></span>
                <br />
                <asp:Label ID="lblOrder" runat="server"></asp:Label>
                and
                <asp:Label ID="lblCount" runat="server"></asp:Label>
                <br />
            </asp:View>
            <asp:View ID="vwResult" runat="server">
            </asp:View>
        </asp:MultiView>
    </ContentTemplate>
</asp:UpdatePanel>

Namespaces

C#

using System.Data;

VB.Bet

Imports System.Data

Code

C#

protected void Page_Load(object sender, EventArgs e)
{
    if (!IsPostBack)
    {
        lstFullName.Items.Add(new ListItem("Select CustDisplayname", ""));
        lstFullName.AppendDataBoundItems = true;
        DataTable dt = GetCustomerContactList();
        lstFullName.DataSource = dt;
        lstFullName.DataTextField = "CustDisplayname";
        lstFullName.DataValueField = "CustDisplayname";
        lstFullName.DataBind();
    }
}

protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
    DataTable dt = GetCustomerContactList().Select("CustDisplayname='" + lstFullName.SelectedItem.Value + "'").CopyToDataTable();

    txtName.Text = dt.Rows[0]["CustDisplayname"].ToString();
    txtDepartment.Text = dt.Rows[0]["dept_list"].ToString();
    txtEmail.Text = dt.Rows[0]["email"].ToString();
    txtPhone.Text = dt.Rows[0]["telNumber"].ToString();
    txtOrder.Text = dt.Rows[0]["numberOrder"].ToString();
    txtCount.Text = dt.Rows[0]["Count"].ToString();

    lblName.Text = dt.Rows[0]["CustDisplayname"].ToString();
    lblDepartment.Text = dt.Rows[0]["dept_list"].ToString();
    lblEmail.Text = dt.Rows[0]["email"].ToString();
    lblPhone.Text = dt.Rows[0]["telNumber"].ToString();
    lblOrder.Text = dt.Rows[0]["numberOrder"].ToString();
    lblCount.Text = dt.Rows[0]["Count"].ToString();
}

protected void UpdateCustomerList(object sender, EventArgs e)
{
    string department = txtDepartment.Text.Trim();
    string email = txtEmail.Text.Trim();
    string phone = txtPhone.Text.Trim();
    string order = txtOrder.Text.Trim();
    string count = txtCount.Text.Trim();

    DataTable dtCustomer = Session["CustomerList"] as DataTable;

    foreach (DataRow dr in dtCustomer.Rows)
    {
        if (dr["CustDisplayname"].ToString() == lstFullName.SelectedItem.Value)
        {
            dr["dept_list"] = department;
            dr["email"] = email;
            dr["telNumber"] = phone;
            dr["numberOrder"] = order;
            dr["Count"] = count;
        }
    }
    Session["CustomerList"] = dtCustomer;

    DataTable dt = (Session["CustomerList"] as DataTable).Select("CustDisplayname='" + lstFullName.SelectedItem.Value + "'").CopyToDataTable();
    lblName.Text = dt.Rows[0]["CustDisplayname"].ToString();
    lblDepartment.Text = dt.Rows[0]["dept_list"].ToString();
    lblEmail.Text = dt.Rows[0]["email"].ToString();
    lblPhone.Text = dt.Rows[0]["telNumber"].ToString();
    lblOrder.Text = dt.Rows[0]["numberOrder"].ToString();
    lblCount.Text = dt.Rows[0]["Count"].ToString();
}

private DataTable GetCustomerContactList()
{
    DataTable dt;
    if (Session["CustomerList"] == null)
    {
        dt = new DataTable();
        dt.Columns.AddRange(new DataColumn[] { 
            new DataColumn("CustDisplayname", typeof(string)),
            new DataColumn("dept_list", typeof(string)),
            new DataColumn("email", typeof(string)),
            new DataColumn("telNumber", typeof(Int64)),
            new DataColumn("numberOrder", typeof(int)),
            new DataColumn("Count", typeof(int)) });
        dt.Rows.Add("John Hammond", "Computer", "test@test.com", 1111, 1001, 8);
        dt.Rows.Add("Mudassar Khan", "IT", "test@test.com", 2222, 1002, 5);
        dt.Rows.Add("Suzanne Mathews", "IT", "test@test.com", 3333, 1003, 10);
        dt.Rows.Add("Robert Schidner", "Computer", "test@test.com", 4444, 1004, 2);
        Session["CustomerList"] = dt;
    }
    else
    {
        dt = Session["CustomerList"] as DataTable;
    }

    return dt;
}

VB.Net

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
    If Not IsPostBack Then
        lstFullName.Items.Add(New ListItem("Select CustDisplayname", ""))
        lstFullName.AppendDataBoundItems = True
        Dim dt As DataTable = GetCustomerContactList()
        lstFullName.DataSource = dt
        lstFullName.DataTextField = "CustDisplayname"
        lstFullName.DataValueField = "CustDisplayname"
        lstFullName.DataBind()
    End If
End Sub

Protected Sub DropDownList1_SelectedIndexChanged(ByVal sender As Object, ByVal e As EventArgs)
    Dim dt As DataTable = GetCustomerContactList().Select("CustDisplayname='" & lstFullName.SelectedItem.Value & "'").CopyToDataTable()
    txtName.Text = dt.Rows(0)("CustDisplayname").ToString()
    txtDepartment.Text = dt.Rows(0)("dept_list").ToString()
    txtEmail.Text = dt.Rows(0)("email").ToString()
    txtPhone.Text = dt.Rows(0)("telNumber").ToString()
    txtOrder.Text = dt.Rows(0)("numberOrder").ToString()
    txtCount.Text = dt.Rows(0)("Count").ToString()
    lblName.Text = dt.Rows(0)("CustDisplayname").ToString()
    lblDepartment.Text = dt.Rows(0)("dept_list").ToString()
    lblEmail.Text = dt.Rows(0)("email").ToString()
    lblPhone.Text = dt.Rows(0)("telNumber").ToString()
    lblOrder.Text = dt.Rows(0)("numberOrder").ToString()
    lblCount.Text = dt.Rows(0)("Count").ToString()
End Sub

Protected Sub UpdateCustomerList(ByVal sender As Object, ByVal e As EventArgs)
    Dim department As String = txtDepartment.Text.Trim()
    Dim email As String = txtEmail.Text.Trim()
    Dim phone As String = txtPhone.Text.Trim()
    Dim order As String = txtOrder.Text.Trim()
    Dim count As String = txtCount.Text.Trim()
    Dim dtCustomer As DataTable = TryCast(Session("CustomerList"), DataTable)

    For Each dr As DataRow In dtCustomer.Rows

        If dr("CustDisplayname").ToString() = lstFullName.SelectedItem.Value Then
            dr("dept_list") = department
            dr("email") = email
            dr("telNumber") = phone
            dr("numberOrder") = order
            dr("Count") = count
        End If
    Next

    Session("CustomerList") = dtCustomer
    Dim dt As DataTable = (TryCast(Session("CustomerList"), DataTable)) _
                        .Select("CustDisplayname='" & lstFullName.SelectedItem.Value & "'").CopyToDataTable()
    lblName.Text = dt.Rows(0)("CustDisplayname").ToString()
    lblDepartment.Text = dt.Rows(0)("dept_list").ToString()
    lblEmail.Text = dt.Rows(0)("email").ToString()
    lblPhone.Text = dt.Rows(0)("telNumber").ToString()
    lblOrder.Text = dt.Rows(0)("numberOrder").ToString()
    lblCount.Text = dt.Rows(0)("Count").ToString()
End Sub

Private Function GetCustomerContactList() As DataTable
    Dim dt As DataTable

    If Session("CustomerList") Is Nothing Then
        dt = New DataTable()
        dt.Columns.AddRange(New DataColumn() {New DataColumn("CustDisplayname", GetType(String)),
                                              New DataColumn("dept_list", GetType(String)),
                                              New DataColumn("email", GetType(String)),
                                              New DataColumn("telNumber", GetType(Int64)),
                                              New DataColumn("numberOrder", GetType(Integer)),
                                              New DataColumn("Count", GetType(Integer))})
        dt.Rows.Add("John Hammond", "Computer", "test@test.com", 1111, 1001, 8)
        dt.Rows.Add("Mudassar Khan", "IT", "test@test.com", 2222, 1002, 5)
        dt.Rows.Add("Suzanne Mathews", "IT", "test@test.com", 3333, 1003, 10)
        dt.Rows.Add("Robert Schidner", "Computer", "test@test.com", 4444, 1004, 2)
        Session("CustomerList") = dt
    Else
        dt = TryCast(Session("CustomerList"), DataTable)
    End If

    Return dt
End Function

Screenshot