如何在一列中更新基於CheckBox的特定GridView列

我的GridView具有「活動」複選框，用於指示記錄是否處於活動狀態。這只是一個標誌，在數據庫中有點價值。如何在一列中更新基於CheckBox的特定GridView列

當用戶選中或取消選中CheckBox（處於編輯模式）時，我需要更新「ActivatedBy」和「DeactivatedBy」字段。

我每次更新行時都會更新「UpdatedBy」字段，並用@UserName填充它。

但是，我不知道如何分別編程更新ActivatedBy或DeactivatedBy字段只有當複選框被選中或未選中時。這只是記錄誰更改了複選框（@ UserName是工作參數）。

請假設我需要爲我詳細說明的細節。我做。 ;-)我只是在學C＃而GridViews是我的禍根。謝謝！

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Admin.aspx.cs" Inherits="Admin" MaintainScrollPositionOnPostback="true" %> 

<!DOCTYPE html> 

<html> 
<head runat="server"> 
    <title>Admin</title> 
    <style> 
     body { 
      font-family:Arial; 
      font-size:12px; 
     } 
    </style> 
</head> 
<body> 
    <form id="form1" runat="server"> 
    <div> 
     <asp:GridView ID="GridView1" runat="server" AllowSorting="True" AutoGenerateColumns="False" CellPadding="4" DataKeyNames="programid" DataSourceID="ITAAdminSqlDataSource" ForeColor="#333333" GridLines="None"> 
      <AlternatingRowStyle BackColor="White" /> 
      <Columns> 
       <asp:CommandField ShowEditButton="True" ShowSelectButton="True" /> 
       <asp:BoundField DataField="programid" HeaderText="programid" InsertVisible="False" ReadOnly="True" SortExpression="programid" Visible="False" /> 
       <asp:BoundField DataField="OccGroup" HeaderText="Occ Group" SortExpression="OccGroup" /> 
       <asp:BoundField DataField="Provider" HeaderText="Provider" SortExpression="Provider" /> 
       <asp:BoundField DataField="Program" HeaderText="Program" SortExpression="Program" /> 
       <asp:BoundField DataField="OnetCode" HeaderText="Onet Code" SortExpression="OnetCode" /> 
       <asp:BoundField DataField="Address" HeaderText="Address" SortExpression="Address" /> 
       <asp:BoundField DataField="City" HeaderText="City" SortExpression="City" /> 
       <asp:BoundField DataField="Telephone" HeaderText="Telephone" SortExpression="Telephone" > 
       <ItemStyle Wrap="False" /> 
       </asp:BoundField> 
       <asp:BoundField DataField="TuitionCosts" DataFormatString="{0:c}" HeaderText="Tuition" HtmlEncode="False" SortExpression="TuitionCosts" /> 
       <asp:BoundField DataField="OtherCosts" DataFormatString="{0:c}" HeaderText="Other Costs" HtmlEncode="False" SortExpression="OtherCosts" /> 
       <asp:BoundField DataField="SpecialConditions" HeaderText="Special Conditions" SortExpression="SpecialConditions" /> 
       <asp:BoundField DataField="Credential" HeaderText="Credential" SortExpression="Credential" /> 
       <asp:CheckBoxField DataField="Active" HeaderText="Active" SortExpression="Active" /> 
       <asp:BoundField DataField="DateEntered" DataFormatString="{0:d}" HeaderText="Date Entered" HtmlEncode="False" SortExpression="DateEntered" /> 
       <asp:BoundField DataField="EnteredBy" HeaderText="Entered By" SortExpression="EnteredBy" /> 
       <asp:BoundField DataField="DateUpdated" DataFormatString="{0:d}" HeaderText="Date Updated" HtmlEncode="False" SortExpression="DateUpdated" /> 
       <asp:BoundField DataField="UpdatedBy" HeaderText="Updated By" SortExpression="UpdatedBy" /> 
       <asp:BoundField DataField="DateActivated" DataFormatString="{0:d}" HeaderText="Date Activated" HtmlEncode="False" SortExpression="DateActivated" /> 
       <asp:BoundField DataField="ActivatedBy" HeaderText="Activated By" SortExpression="ActivatedBy" /> 
       <asp:BoundField DataField="DateDeactivated" DataFormatString="{0:d}" HeaderText="Date Deactivated" HtmlEncode="False" SortExpression="DateDeactivated" /> 
       <asp:BoundField DataField="DeactivatedBy" HeaderText="Deactivated By" SortExpression="DeactivatedBy" /> 
      </Columns> 
      <EditRowStyle BackColor="Tomato" /> 
      <FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" /> 
      <HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" /> 
      <PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" /> 
      <RowStyle BackColor="#EFF3FB" /> 
      <SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" /> 
      <SortedAscendingCellStyle BackColor="#F5F7FB" /> 
      <SortedAscendingHeaderStyle BackColor="#6D95E1" /> 
      <SortedDescendingCellStyle BackColor="#E9EBEF" /> 
      <SortedDescendingHeaderStyle BackColor="#4870BE" /> 
     </asp:GridView> 
     <asp:SqlDataSource ID="ITAAdminSqlDataSource" runat="server" ConnectionString="<%$ ConnectionStrings:ITAAdminConnectionString %>" 
      DeleteCommand="DELETE FROM [programs] WHERE [programid] = @programid" 
      InsertCommand="INSERT INTO [programs] ([OccGroup], [Provider], [Program], [OnetCode], [Address], [City], [Telephone], [TuitionCosts], [OtherCosts], [SpecialConditions], [Credential], [Active], [DateEntered], [EnteredBy], [DateUpdated], [UpdatedBy], [DateActivated], [ActivatedBy], [DateDeactivated], [DeactivatedBy]) VALUES (@OccGroup, @Provider, @Program, @OnetCode, @Address, @City, @Telephone, @TuitionCosts, @OtherCosts, @SpecialConditions, @Credential, @Active, @DateEntered, @EnteredBy, @DateUpdated, @UpdatedBy, @DateActivated, @ActivatedBy, @DateDeactivated, @DeactivatedBy)" 
      SelectCommand="SELECT [programid], [OccGroup], [Provider], [Program], [OnetCode], [Address], [City], [Telephone], [TuitionCosts], [OtherCosts], [SpecialConditions], [Credential], [Active], [DateEntered], [EnteredBy], [DateUpdated], [UpdatedBy], [DateActivated], [ActivatedBy], [DateDeactivated], [DeactivatedBy] FROM [programs] ORDER BY [Provider], [Program]" 
      UpdateCommand="UPDATE [programs] SET [OccGroup] = @OccGroup, [Provider] = @Provider, [Program] = @Program, [OnetCode] = @OnetCode, [Address] = @Address, [City] = @City, [Telephone] = @Telephone, [TuitionCosts] = @TuitionCosts, [OtherCosts] = @OtherCosts, [SpecialConditions] = @SpecialConditions, [Credential] = @Credential, [Active] = @Active, [DateEntered] = @DateEntered, [EnteredBy] = @EnteredBy, [DateUpdated] = GETDATE(), [UpdatedBy] = @UserName, [DateActivated] = @DateActivated, [ActivatedBy] = @ActivatedBy, [DateDeactivated] = @DateDeactivated, [DeactivatedBy] = @DeactivatedBy WHERE [programid] = @programid"> 
      <DeleteParameters> 
       <asp:Parameter Name="programid" Type="Int32" /> 
      </DeleteParameters> 
      <InsertParameters> 
       <asp:Parameter Name="OccGroup" Type="String" /> 
       <asp:Parameter Name="Provider" Type="String" /> 
       <asp:Parameter Name="Program" Type="String" /> 
       <asp:Parameter Name="OnetCode" Type="Int32" /> 
       <asp:Parameter Name="Address" Type="String" /> 
       <asp:Parameter Name="City" Type="String" /> 
       <asp:Parameter Name="Telephone" Type="String" /> 
       <asp:Parameter Name="TuitionCosts" Type="Decimal" /> 
       <asp:Parameter Name="OtherCosts" Type="Decimal" /> 
       <asp:Parameter Name="SpecialConditions" Type="String" /> 
       <asp:Parameter Name="Credential" Type="String" /> 
       <asp:Parameter Name="Active" Type="Boolean" /> 
       <asp:Parameter DbType="Date" Name="DateEntered" /> 
       <asp:Parameter Name="EnteredBy" Type="String" /> 
       <asp:Parameter DbType="Date" Name="DateUpdated" /> 
       <asp:Parameter Name="UpdatedBy" Type="String" /> 
       <asp:Parameter Name="username" Type="String" DefaultValue="Anonymous" /> <%-- username parameter filled in Page_Init. use @username instead of UpdatedBy, ActivatedBy, etc. --%> 
       <asp:Parameter DbType="Date" Name="DateActivated" /> 
       <asp:Parameter Name="ActivatedBy" Type="String" /> 
       <asp:Parameter DbType="Date" Name="DateDeactivated" /> 
       <asp:Parameter Name="DeactivatedBy" Type="String" /> 
      </InsertParameters> 
      <UpdateParameters> 
       <asp:Parameter Name="OccGroup" Type="String" /> 
       <asp:Parameter Name="Provider" Type="String" /> 
       <asp:Parameter Name="Program" Type="String" /> 
       <asp:Parameter Name="OnetCode" Type="Int32" /> 
       <asp:Parameter Name="Address" Type="String" /> 
       <asp:Parameter Name="City" Type="String" /> 
       <asp:Parameter Name="Telephone" Type="String" /> 
       <asp:Parameter Name="TuitionCosts" Type="Decimal" /> 
       <asp:Parameter Name="OtherCosts" Type="Decimal" /> 
       <asp:Parameter Name="SpecialConditions" Type="String" /> 
       <asp:Parameter Name="Credential" Type="String" /> 
       <asp:Parameter Name="Active" Type="Boolean" /> 
       <asp:Parameter DbType="Date" Name="DateEntered" /> 
       <asp:Parameter Name="EnteredBy" Type="String" /> 
       <asp:Parameter DbType="Date" Name="DateUpdated" /> 
       <asp:Parameter Name="UpdatedBy" Type="String" /> 
       <asp:Parameter Name="username" Type="String" DefaultValue="Anonymous" /> <%-- username parameter filled in Page_Init. use @username instead of UpdatedBy, ActivatedBy, etc. --%> 
       <asp:Parameter DbType="Date" Name="DateActivated" /> 
       <asp:Parameter Name="ActivatedBy" Type="String" /> 
       <asp:Parameter DbType="Date" Name="DateDeactivated" /> 
       <asp:Parameter Name="DeactivatedBy" Type="String" /> 
       <asp:Parameter Name="programid" Type="Int32" /> 
      </UpdateParameters> 
     </asp:SqlDataSource> 
    </div> 
    </form> 
</body> 
</html> 


using System; 
using System.Collections.Generic; 
using System.Web; 
using System.Web.UI; 
using System.Web.UI.WebControls; 

public partial class Admin : System.Web.UI.Page 
{ 
    protected string ClearDomain(string sItem) //Format username without domain 
    { 
     int sLoc = (sItem.IndexOf("\\") + 1); 
     string sOutPut; 
     sOutPut = sItem.Substring(sLoc); 
     return sOutPut; 
    } 

    protected void Page_Load(object sender, EventArgs e) 
    { 
     //string usr; 
     //usr = ClearDomain(User.Identity.Name.ToString()); 
    } 

    protected void Page_Init(object sender, EventArgs e) 
    { 
     ITAAdminSqlDataSource.InsertParameters["UserName"].DefaultValue = ClearDomain(User.Identity.Name.ToString()); 
     ITAAdminSqlDataSource.UpdateParameters["UserName"].DefaultValue = ClearDomain(User.Identity.Name.ToString()); 
    } 
}

來源

2017-10-17 David Megnin

這就是我該怎麼做的。首先將一個TemplateField添加到您的GridView中以保留CheckBox並將OnCheckedChanged事件添加到CheckBox並將AutoPostBack設置爲true。然後在GridView中設置DataKeyNames。該值應該是您的數據庫索引或標識符。你的情況可能是programid。生成的GridView看起來像這樣。

<asp:GridView ID="GridView1" runat="server" DataKeyNames="programid"> 
    <Columns> 
     <asp:TemplateField> 
      <ItemTemplate> 
       <asp:CheckBox ID="CheckBox1" runat="server" 
        Checked='<%# Convert.ToBoolean(Eval("sold")) %>' 
        OnCheckedChanged="CheckBox1_CheckedChanged" AutoPostBack="true" /> 
      </ItemTemplate> 
     </asp:TemplateField> 
    </Columns> 
</asp:GridView>

然後，在後面的CheckBox1_CheckedChanged方法的代碼。

protected void CheckBox1_CheckedChanged(object sender, EventArgs e) 
{ 
    //get the current datagrid item from the sender 
    GridViewRow row = (GridViewRow)(((Control)sender).NamingContainer); 

    //get the correct programid from the datakeys 
    int programid = Convert.ToInt32(GridView1.DataKeys[row.DataItemIndex].Values[0]); 

    //cast the sender back to a checkbox 
    CheckBox cb = sender as CheckBox; 

    //create the sql string 
    string sqlString = "UPDATE programs SET ActivatedBy = @ActivatedBy WHERE (programid = @programid)"; 

    //create a connection to the db and a command 
    using (SqlConnection connection = new SqlConnection(myConnectionString)) 
    using (SqlCommand command = new SqlCommand(sqlString, connection)) 
    { 
     //set the proper command type 
     command.CommandType = CommandType.Text; 

     //replace the parameters 
     command.Parameters.Add("@ActivatedBy", SqlDbType.Bit).Value = cb.Checked; 
     command.Parameters.Add("@programid", SqlDbType.Int).Value = programid; 

     try 
     { 
      //open the db and execute the sql string 
      connection.Open(); 
      command.ExecuteNonQuery(); 
     } 
     catch (Exception ex) 
     { 
      //catch any errors like unable to open db or errors in command. view with ex.Message 
      Response.Write(ex.Message); 
     } 
    } 
}

來源

2017-10-17 20:12:27 VDWWD

謝謝VDWWD！這有很大幫助。除了「ActivatedBy」之外，我還需要記錄「DeactivatiedBy」，但我想我可以通過你給我的內容找出條件。如果我沒有遇到任何問題，我會設置這部分並回來接受你的答案。 –

噢，我進行了所有編輯，以及在FormView中完成的插入，而不是在GridView中顯示Edit LinkButton。不過，我認爲它完全一樣。 ...添加一個TemplateField到FormView ... –

哦，實際上它比這更容易... FormView已經有它的EditItemTemplate :-)嗯，看起來像背後的代碼將需要一些重大的變化，但。 ...在其上工作... –

I need a Status column in database which contains 1,0 for representing Employee's Status "Active" and "Inactive" respectively. I want edit this record through front-end,having grid-view, and want to perform on GridView's update event, after clicking on Edit Button. I have a TemplateField having header-text "Status". I am unable to update changed value of checkbox. 

Moreover, if will get checked or unchecked CheckBox on the basis of value stored in database, if it is 0 then CheckBox will be uncheked, otherwise will be checked. If user click on edit button, and then check or uncheck any Check-box, then on the basis of this, value should be updated in database. 

DataBase:- 

CREATE TABLE [dbo].[Employee](
    [Employee_ID] [int] IDENTITY(1,1) NOT NULL, 
    [Employee_Name] [varchar](50) NULL, 
    [Employee_Address] [varchar](100) NULL, 
    [Emp_Status] [int] NULL, 
PRIMARY KEY CLUSTERED 
(
    [Employee_ID] ASC 
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY] 
) ON 

Front-End:- 

Mark-up: 

     <asp:GridView ID="GV_Product" runat="server" BackColor="White" BorderColor="#999999" BorderStyle="None" BorderWidth="1px" CellPadding="3" GridLines="Vertical" AutoGenerateColumns="false" ShowFooter="true" OnRowEditing="GV_Product_RowEditing" OnRowUpdating="GV_Product_RowUpdating" OnRowDeleting="GV_Product_RowDeleting" OnRowCancelingEdit="GV_Product_RowCancelingEdit" OnRowCommand="GV_Product_RowCommand" AllowPaging="true" PageSize="5" OnPageIndexChanging="GV_Product_PageIndexChanging"> 
          <AlternatingRowStyle BackColor="Gainsboro" /> 

          <Columns> 
           <asp:TemplateField HeaderText="Employee ID"> 
            <ItemTemplate> 
             <asp:Label ID="lbl_ID" runat="server" Text='<%# DataBinder.Eval(Container.DataItem,"Employee_ID") %>'></asp:Label> 
            </ItemTemplate> 
           </asp:TemplateField> 
           <asp:TemplateField HeaderText="Employee Name"> 
            <ItemTemplate> 
             <asp:TextBox ID="txt_Name" runat="server" Text='<%# DataBinder.Eval(Container.DataItem,"Employee_Name") %>'></asp:TextBox> 
            </ItemTemplate> 

            <EditItemTemplate> 
             <asp:TextBox ID="txtEdit_Name" runat="server" Text='<%# DataBinder.Eval(Container.DataItem,"Employee_Name") %>'></asp:TextBox> 
            </EditItemTemplate> 

            <FooterTemplate> 
             <asp:TextBox ID="txtAdd_Name" runat="server"></asp:TextBox> 
             <%--<asp:RequiredFieldValidator ID="txtName" runat="server" ControlToValidate="txtAdd_Name" ErrorMessage="Please enter Employee Name"></asp:RequiredFieldValidator>--%> 
            </FooterTemplate> 

           </asp:TemplateField> 
           <asp:TemplateField HeaderText="Employee Address"> 
            <ItemTemplate> 
             <asp:TextBox ID="txt_Address" runat="server" Text='<%# DataBinder.Eval(Container.DataItem,"Employee_Address") %>'></asp:TextBox> 
            </ItemTemplate> 

            <EditItemTemplate> 
             <asp:TextBox ID="txtEdit_Address" runat="server" Text='<%# DataBinder.Eval(Container.DataItem,"Employee_Address") %>'></asp:TextBox> 
            </EditItemTemplate> 

            <FooterTemplate> 
             <asp:TextBox ID="txtAdd_Address" runat="server"></asp:TextBox> 
            </FooterTemplate> 
           </asp:TemplateField> 

           <asp:TemplateField HeaderText="Action"> 
            <ItemTemplate> 
             <asp:Button ID="btnEdit" runat="server" Text="Edit" CommandName="Edit" /> 
             <asp:Button ID="btnDelete" runat="server" Text="Delete" CommandName="Delete" OnClientClick="return confirm('Are you sure you want to delete this record?')" /> 

            </ItemTemplate> 

            <EditItemTemplate> 
             <asp:Button ID="btnUpdate" runat="server" Text="Update" CommandName="Update" /> 
             <asp:Button ID="btnCancel" runat="server" Text="Cancel" CommandName="Cancel" /> 
            </EditItemTemplate> 

            <FooterTemplate> 
             <asp:LinkButton ID="lblAdd" runat="server" Width="100px" Text="Add" CommandName="ADD"></asp:LinkButton> 
            </FooterTemplate> 
           </asp:TemplateField> 

           <asp:TemplateField HeaderText="Status"> 
            <ItemTemplate> 
             <asp:CheckBox ID="ChkBox" runat="server" Checked='<%# GetStatus(DataBinder.Eval(Container.DataItem,"Emp_Status").ToString())%>' /> 
            </ItemTemplate> 

            <EditItemTemplate> 
             <asp:CheckBox ID="EditChkBox" runat="server" Checked='<%# GetStatus(DataBinder.Eval(Container.DataItem,"Emp_Status").ToString())%>'/> 
             <%--<asp:CheckBoxList ID="ChkBoxList" runat="server"> 
              <asp:ListItem>1</asp:ListItem> 
             </asp:CheckBoxList>--%> 
            </EditItemTemplate> 
           </asp:TemplateField> 


          </Columns> 


    <FooterStyle BackColor="#CCCCCC" ForeColor="Black" /> 
         <HeaderStyle BackColor="#000084" Font-Bold="True" ForeColor="White" /> 
         <PagerStyle BackColor="#999999" ForeColor="Black" HorizontalAlign="Center" /> 
         <RowStyle BackColor="#EEEEEE" ForeColor="Black" /> 
         <SelectedRowStyle BackColor="#008A8C" Font-Bold="True" ForeColor="White" /> 
         <SortedAscendingCellStyle BackColor="#F1F1F1" /> 
         <SortedAscendingHeaderStyle BackColor="#0000A9" /> 
         <SortedDescendingCellStyle BackColor="#CAC9C9" /> 
         <SortedDescendingHeaderStyle BackColor="#000065" /> 
        </asp:GridView> 

Code: 

protected bool GetStatus(string str) 
    { 
     if (str=="1") 
     { 
      return true; 
     } 

     else 
     { 
      return false; 
     } 
    } 

I am getting Error:- 

An exception of type 'System.ArgumentOutOfRangeException' occurred in mscorlib.dll but was not handled in user code

來源

2017-10-23 16:00:23

如何在一列中更新基於CheckBox的特定GridView列

回答

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