<%@ Page Language="C#" %> <html> <head id="Head1" runat="server"> <script runat="server"> protected void MoveS(object sender, EventArgs e) { this.lstSource.ClearSelection(); if (this.lstDestination.SelectedIndex > -1) { string s = this.lstDestination.SelectedValue; this.lstSource.Items.Add(this.lstDestination.SelectedItem); this.lstDestination.Items.Remove(this.lstDestination.SelectedItem); this.lstSource.SelectedValue = s; } } protected void MoveD(object sender, EventArgs e) { this.lstDestination.ClearSelection(); if (this.lstSource.SelectedIndex > -1) { string s = this.lstSource.SelectedValue; this.lstDestination.Items.Add(this.lstSource.SelectedItem); this.lstSource.Items.Remove(this.lstSource.SelectedItem); this.lstDestination.SelectedValue = s; } } protected void Edit(object sender, EventArgs e) { this.hdnSelection.Value = string.Empty; this.txtEdit.Text = string.Empty; if (this.lstSource.SelectedIndex > -1) { this.txtEdit.Text = this.lstSource.SelectedValue; this.hdnSelection.Value = "S"; this.lstSource.Items.Remove(this.lstSource.SelectedItem); } else if (this.lstDestination.SelectedIndex > -1) { this.txtEdit.Text = this.lstDestination.SelectedValue; this.hdnSelection.Value = "D"; this.lstDestination.Items.Remove(this.lstDestination.SelectedItem); } if (!string.IsNullOrEmpty(this.txtEdit.Text)) { this.pnlEdit.Visible = true; this.pnlItems.Enabled = false; } } protected void Save(object sender, EventArgs e) { if (this.hdnSelection.Value.Equals("D")) this.lstDestination.Items.Add(new ListItem(this.txtEdit.Text)); else if (this.hdnSelection.Value.Equals("S")) this.lstSource.Items.Add(new ListItem(this.txtEdit.Text)); this.txtEdit.Text = string.Empty; this.hdnSelection.Value = string.Empty; this.pnlEdit.Visible = false; this.pnlItems.Enabled = true; } protected void ClearDestination(object sender, EventArgs e) { this.lstDestination.ClearSelection(); } protected void ClearSource(object sender, EventArgs e) { this.lstSource.ClearSelection(); } </script> </head> <body> <form runat="server" id="form1"> <asp:ScriptManager runat="server" ID="pageScriptManager" /> <asp:UpdatePanel runat="server" ID="upnlEdit"> <ContentTemplate> <asp:Panel runat="server" ID="pnlItems"> <asp:ListBox runat="server" ID="lstSource" OnSelectedIndexChanged="ClearDestination" AutoPostBack="true"> <asp:ListItem>Car</asp:ListItem> <asp:ListItem>Van</asp:ListItem> <asp:ListItem>Truck</asp:ListItem> <asp:ListItem>Bike</asp:ListItem> <asp:ListItem>Cycle</asp:ListItem> </asp:ListBox> <asp:ListBox runat="server" ID="lstDestination" OnSelectedIndexChanged="ClearSource" AutoPostBack="true" /> </asp:Panel> <hr /> <asp:Button runat="server" ID="btnMoveD" OnClick="MoveD" Text=">>" /> <asp:Button runat="server" ID="btnMoveS" OnClick="MoveS" Text="<<" /> <asp:Button runat="server" ID="btnEdit" Text="Edit" OnClick="Edit" /> <hr /> <asp:Panel runat="server" ID="pnlEdit" Visible="false"> <asp:TextBox runat="server" ID="txtEdit"></asp:TextBox> <asp:RequiredFieldValidator runat="server" ID="rvalEdit" ControlToValidate="txtEdit" Display="Dynamic" ErrorMessage="*" ValidationGroup="Edit" /> <asp:HiddenField runat="server" ID="hdnSelection" /> <asp:Button runat="server" ID="btnSave" OnClick="Save" Text="Save" ValidationGroup="Edit" /> </asp:Panel> </ContentTemplate> </asp:UpdatePanel> </form> </body> </html>
Thursday, October 07, 2010
How to move items between two ListBoxes
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