I want to replace semicolons in a dynamic gridview with a line break
I'm just starting into VB.NET programming, and have designed a simple webpage with a dropdown list (dynamically read from SQL) that populates a GridView showing only that color's formula. It deals with color-mixing formulas for specialized paint. The formulas themselves have it's inidividual parts separated by semi-colons in one of the columns, and I want to use this character as a line-break, so that each formula part is shown on a seperate line within the GridView cell. I have tried numerous ways to Replace, Split, etc, but running into a road-block. Where/how do I add code to perform this replacement?
Here's my code as it sits:
<body>
<form id="form1" runat="server">
<div>
<asp:ImageButton ID="ImageButton1" runat="server"
AlternateText="Home Page" Height="46px"
ImageUrl="~/Images/Block_Tagline.jpg"
PostBackUrl="~/Default.aspx" Width="140px" />
<br />
<asp:LoginName ID="LoginName"
FormatString="Currently logged in as {0}"
runat="server"
ForeColor="#009933" />
<br />
<br />
<br />
Choose Your Color:
<asp:DropDownList ID="DropDownList1" runat="server"
AutoPostBack="true"
OnSelectedIndexChanged="DropDownList1_SelectedIndexChanged">
</asp:DropDownList>
<br />
<br />
开发者_StackOverflow中文版<asp:GridView ID="ColorGridView" runat="server"
Width="100%" BackColor="White"
BorderColor="#E7E7FF" BorderStyle="None"
BorderWidth="1px" CellPadding="3"
GridLines="Horizontal">
<RowStyle BackColor="#E7E7FF" ForeColor="#4A3C8C" />
<PagerStyle ForeColor="#4A3C8C" HorizontalAlign="Right"
BackColor="#E7E7FF" />
<SelectedRowStyle BackColor="#738A9C" Font-Bold="True"
ForeColor="#F7F7F7" />
<HeaderStyle BackColor="#4A3C8C" Font-Bold="True"
ForeColor="#F7F7F7" />
<AlternatingRowStyle BackColor="#F7F7F7" />
</asp:GridView>
<span id="Message" runat="server"/>
<b></b>
<br />
<asp:Button ID="btnEdit" runat="server"
Text="Edit/Add/Delete Colors"
PostBackUrl="~/Edit/EditColors.aspx" />
</div>
</form>
</body>
Code Behind:
Partial Class _Default
Inherits System.Web.UI.Page
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
If Not IsPostBack Then
Dim username As String = System.Security.Principal.WindowsIdentity.GetCurrent().Name
DropDownList1.Items.Insert(0, New ListItem("---Select---"))
FillDropDownList()
End If
End Sub
' Show data in GridView
Protected Sub DropDownList1_SelectedIndexChanged(ByVal sender As Object, ByVal e As EventArgs)
Dim s As String = WebConfigurationManager.ConnectionStrings("ConnectionString").ConnectionString
Dim con As SqlConnection = New SqlConnection(s)
con.Open()
Dim cmd As SqlCommand = New SqlCommand("SELECT * from z_md_ColorFormulas where BlankColor='" + DropDownList1.SelectedItem.ToString() + "'", con)
Dim dr As SqlDataReader = cmd.ExecuteReader()
ColorGridView.DataSource = dr
ColorGridView.DataBind()
dr.Close()
con.Close()
End Sub
Public Sub FillDropDownList()
Dim s1 As String = WebConfigurationManager.ConnectionStrings("ConnectionString").ConnectionString
Dim con1 As SqlConnection = New SqlConnection(s1)
con1.Open()
Dim cmd1 As SqlCommand = New SqlCommand("Select BlankColor from z_md_ColorFormulas", con1)
Dim dr1 As SqlDataReader = cmd1.ExecuteReader()
While dr1.Read()
DropDownList1.Items.Add(dr1(0).ToString())
End While
dr1.Close()
con1.Close()
End Sub
Just to flesh out your answer user988265 I assume you meant using the code:
<asp:TemplateField HeaderText="Colours">
<ItemTemplate>
<%# Eval("Colour").ToString().Replace(";","<br />") %>
</ItemTemplate>
</asp:TemplateField>
Worked for me when I needed something similar. Was wondering is it possible to have this populate a drop-down list though?
加载中,请稍侯......
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