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Display Array List Value to Multiple Textbox

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User1228272764 posted

i have 12 textbox that named in sequence like TxtTglCuti1, TxtTglCuti2 and so on until 12.

and in serverside, i have array list :

Public ListTgl As New List(Of String)()

i want to assign all the array list value to the textboxt programaticaly by loop with pre-define condition like :

For i As Integer = 0 To TxtDetailJmlPengajuan.Text - 1 TxtTglCuti(i).text = listTgl(i) Next

my problem is, how we define the i value for textboxt loop ? my textbox start from 1 and the loop start from 0 to reach correct array list index. may be you can suggest me some answer to fix this problem ?

my goals : display arraylist value with appropriate textbox based on loop. (ex: i have 4 value inside the array list, so only 4 textboxes will display in web form with approproate value from array list.

especialy, its code in VB.net+ASP.NET :)
Tuesday, October 16, 2018 9:36 AM

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User-369506445 posted

you can try below code

Public ListTgl As New List(Of String)()

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        ListTgl.Add("ListTgl1")
        ListTgl.Add("ListTgl2")
        ListTgl.Add("ListTgl3")
        ListTgl.Add("ListTgl4")
        ListTgl.Add("ListTgl5")
        ListTgl.Add("ListTgl6")
        ListTgl.Add("ListTgl7")
        ListTgl.Add("ListTgl8")
        ListTgl.Add("ListTgl9")
        ListTgl.Add("ListTgl10")
        ListTgl.Add("ListTgl11")
        ListTgl.Add("ListTgl12")


        For index = 1 To ListTgl.Count
            Dim textbox As TextBox = Me.FindControl("TxtTglCuti" & index )
            textbox.Text = ListTgl(index - 1)
        Next

    End Sub

Html

<html xmlns="http://www.w3.org/1999/xhtml">
<body>
    <form runat="server">
        <asp:TextBox ID="TxtTglCuti1" runat="server" />
        <asp:TextBox ID="TxtTglCuti2" runat="server" />
        <asp:TextBox ID="TxtTglCuti3" runat="server" />
        <asp:TextBox ID="TxtTglCuti4" runat="server" />
        <asp:TextBox ID="TxtTglCuti5" runat="server" />
        <asp:TextBox ID="TxtTglCuti6" runat="server" />
        <asp:TextBox ID="TxtTglCuti7" runat="server" />
        <asp:TextBox ID="TxtTglCuti8" runat="server" />
        <asp:TextBox ID="TxtTglCuti9" runat="server" />
        <asp:TextBox ID="TxtTglCuti10" runat="server" />
        <asp:TextBox ID="TxtTglCuti11" runat="server" />
        <asp:TextBox ID="TxtTglCuti12" runat="server" />
    </form>
</body>
</html>

Marked as answer by Anonymous Thursday, October 7, 2021 12:00 AM

Tuesday, October 16, 2018 10:23 AM

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User-369506445 posted

you can try below code

Public ListTgl As New List(Of String)()

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        ListTgl.Add("ListTgl1")
        ListTgl.Add("ListTgl2")
        ListTgl.Add("ListTgl3")
        ListTgl.Add("ListTgl4")
        ListTgl.Add("ListTgl5")
        ListTgl.Add("ListTgl6")
        ListTgl.Add("ListTgl7")
        ListTgl.Add("ListTgl8")
        ListTgl.Add("ListTgl9")
        ListTgl.Add("ListTgl10")
        ListTgl.Add("ListTgl11")
        ListTgl.Add("ListTgl12")


        For index = 1 To ListTgl.Count
            Dim textbox As TextBox = Me.FindControl("TxtTglCuti" & index )
            textbox.Text = ListTgl(index - 1)
        Next

    End Sub

Html

<html xmlns="http://www.w3.org/1999/xhtml">
<body>
    <form runat="server">
        <asp:TextBox ID="TxtTglCuti1" runat="server" />
        <asp:TextBox ID="TxtTglCuti2" runat="server" />
        <asp:TextBox ID="TxtTglCuti3" runat="server" />
        <asp:TextBox ID="TxtTglCuti4" runat="server" />
        <asp:TextBox ID="TxtTglCuti5" runat="server" />
        <asp:TextBox ID="TxtTglCuti6" runat="server" />
        <asp:TextBox ID="TxtTglCuti7" runat="server" />
        <asp:TextBox ID="TxtTglCuti8" runat="server" />
        <asp:TextBox ID="TxtTglCuti9" runat="server" />
        <asp:TextBox ID="TxtTglCuti10" runat="server" />
        <asp:TextBox ID="TxtTglCuti11" runat="server" />
        <asp:TextBox ID="TxtTglCuti12" runat="server" />
    </form>
</body>
</html>

Marked as answer by Anonymous Thursday, October 7, 2021 12:00 AM

Tuesday, October 16, 2018 10:23 AM

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User1228272764 posted

hi vahid, thank you for the answer. but it's still got an error like :

Object reference not set to an instance of an object.

on the line of code :

textbox.Text = ListTgl(index - 1)

by this error i know the main problem is i am trying to use a null object as if it was a properly referenced object. But i think it will be eliminate null object value if we try to display it inside loop ? it will only show textbox with the value related.
Wednesday, October 17, 2018 1:45 AM
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User-369506445 posted

did you try my code the same?

I tried my code and it works, please put your complete code here

Wednesday, October 17, 2018 5:01 AM

User-893317190 posted

Hi tandasanyu,

From your code TxtTglCuti(i), it seems that you have a list of textbox.

It's not clear about your code TxtDetailJmlPengajuan.Text - 1, so I use 12 as default.

Below is my code.

 Public ListTgl As New List(Of String)()
    Public TxtTglCuti As New List(Of TextBox)()
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        For index = 1 To 12
            TxtTglCuti.Add(New TextBox())
        Next


        ListTgl.Add("the first content")
        ListTgl.Add("the second content")
        ListTgl.Add("the third content")
        ListTgl.Add("the forth content")

        For index = 0 To ListTgl.Count - 1
            TxtTglCuti(index).Text = ListTgl(index)
            Me.form1.Controls.Add(TxtTglCuti(index))
        Next

    End Sub

The result.

Best regards,

Ackerly Xu

Wednesday, October 17, 2018 8:44 AM

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User1228272764 posted

sorry dude, i'm late to mark this as an answer for me. but still big thanks for your answer :)

Tuesday, November 27, 2018 7:37 AM

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Display Array List Value to Multiple Textbox

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