Gridview에서 행 업데이트가 작동하지 않습니다.

Question

Gridview 업데이트를 편집 한 후 변경이 없습니다. 사용 된 중단 점을 검사하고 편집하기 전에 존재하는 동일한 기존 값을 표시합니다. 어떤 종류의 오류도 발생하지 않습니다. Store 프로 시저를 사용하여 Gridview를 업데이트했습니다. 코드를 살펴보고이 문제를 해결할 수 있도록 도와주세요.

영문 코드

<asp:GridView ID="gvData" runat="server" AutoGenerateColumns="False" 
       OnRowEditing="gvData_RowEditing" 
       OnRowDataBound="gvData_RowCreated" 
       OnRowCreated="gvData_RowCreated" 
       OnRowCancelingEdit="gvData_RowCancelingEdit" 
       OnRowUpdating="gvData_RowUpdating" 
       Style="text-align: center; margin-left: 0px;" Height="160px" 
       Width="657px" BackColor="#DEBA84" BorderColor="#DEBA84" 
       orderStyle="None" BorderWidth="0px" CellPadding="3" CellSpacing="2" 
       DataKeyNames="BtnID" Font-Names="Calibri" ForeColor="#CC3300" 
       EmptyDataText="No Records Found!!!" 
       CaptionAlign="Left" HorizontalAlign="Left" 
> 
    <AlternatingRowStyle HorizontalAlign="Left" VerticalAlign="Middle" Wrap="False" BorderStyle="None" /> 
    <Columns> 
     <asp:TemplateField HeaderText="BtnID" > 
      <ItemTemplate> 
       <asp:Label ID="lblBtnID" runat="server" ForeColor="#003366" 
         Font-Names="Calibri" Font-Size="Small" Height="24px" Width="20px" 
         Text='<%#Eval("BtnID") %>'> </asp:Label> 
      </ItemTemplate> 
     </asp:TemplateField> 
     <asp:TemplateField HeaderText="LogdInUsername" > 
      <ItemTemplate> 
       <asp:Label ID="lblLogdInUsername" runat="server" ForeColor="#003366" 
         Font-Names="Calibri" Font-Size="Small" Height="24px" Width="20px" 
         Text='<%#Eval("LogdInUsername") %>'> </asp:Label> 
      </ItemTemplate> 
     </asp:TemplateField> 
     <asp:TemplateField HeaderText="Year"> 
      <ItemTemplate> 
       <asp:Label ID="lblYear" runat="server" ForeColor="#003366" 
        Font-Names="Calibri" Font-Size="Small" Height="24px" Text='<%# Eval("Year") %>' Width="20px"></asp:Label> 
      </ItemTemplate> 
     </asp:TemplateField> 
     <asp:TemplateField HeaderText="Month"> 
      <ItemTemplate> 
       <asp:Label ID="lblMonth" runat="server" ForeColor="#003366" 
        Font-Names="Calibri" Font-Size="Small" Text='<%# Eval("Month") %>' Height="24px" Width="20px"></asp:Label> 
      </ItemTemplate> 
     </asp:TemplateField> 
     <asp:TemplateField HeaderText="Comments"> 
      <ItemTemplate> 
       <asp:Label ID="lblComments" runat="server" 
        ForeColor="#003366" Font-Names="Calibri" Text='<%# Eval("Comments") %>' Font-Size="Small" Height="24px" 
        Width="20px" ></asp:Label> 
      </ItemTemplate> 
      <EditItemTemplate> 
       <asp:TextBox ID="TxtComments" runat="server" 
        Width="300px" Text='<%# Bind("Comments") %>' ></asp:TextBox> 
      </EditItemTemplate> 
     </asp:TemplateField> 
     <asp:TemplateField HeaderText="Action"> 
      <ItemTemplate> 
       <asp:LinkButton ID="btnEdit" Text="Edit" runat="server" CommandName="Edit" /> 
      </ItemTemplate> 
      <EditItemTemplate> 
       <asp:LinkButton ID="btnUpdate" Text="Update" runat="server" CommandName="Update" /> 
       <asp:LinkButton ID="btnCancel" Text="Cancel" runat="server" CommandName="Cancel" /> 
      </EditItemTemplate> 
     </asp:TemplateField> 
    </Columns> 
    <EditRowStyle HorizontalAlign="Left" VerticalAlign="Middle" Wrap="False" 
     BorderStyle="None" /> 
    <EmptyDataRowStyle HorizontalAlign="Left" VerticalAlign="Middle" Wrap="False" /> 
    <FooterStyle BackColor="#F7DFB5" ForeColor="#8C4510" /> 
    <HeaderStyle HorizontalAlign="Left" VerticalAlign="Middle" Wrap="False" /> 
    <PagerStyle ForeColor="#8C4510" HorizontalAlign="Center" /> 
    <RowStyle BackColor="#FFF7E7" ForeColor="#8C4510" HorizontalAlign="Left" 
     VerticalAlign="Middle" Wrap="False" /> 
    <SelectedRowStyle BackColor="#738A9C" Font-Bold="True" ForeColor="White" 
     HorizontalAlign="Left" VerticalAlign="Middle" Wrap="False" /> 
    <SortedAscendingCellStyle BackColor="#FFF1D4" HorizontalAlign="Left" 
     VerticalAlign="Middle" Wrap="False" /> 
    <SortedAscendingHeaderStyle BackColor="#B95C30" /> 
    <SortedDescendingCellStyle BackColor="#F1E5CE" /> 
    <SortedDescendingHeaderStyle BackColor="#93451F" /> 
</asp:GridView> 

CS 코드

protected void Page_Load(object sender, EventArgs e) 
{ 
    DTO objc = new DTO(); 

    string str = Environment.UserName; 

    GrdGetComments(); 

    if (!IsPostBack) 
    { 
     GetYear(); 
     GetMonth(); 
     GrdGetComments(); 

     UserPrincipal up1 = GetUserPrincipal(str); 
     Session["Username"] = str; 
     Session["Name"] = up1.Name; 

     LblName.Text = Session["Username"].ToString(); 
     objc.Name = LblName.Text; 

     LblLogdInUsername.Text = Session["Name"].ToString(); 
     objc.LogdInUsername = LblLogdInUsername.Text; 

     LblDateTime.Text = DateTime.Now.ToString(); 

     LblCompany.Text = ""; 
     objc.Company = LblCompany.Text; 

    } 
} 


public static UserPrincipal GetUserPrincipal(String userName) 
{ 
    UserPrincipal up = null; 

    PrincipalContext context = new PrincipalContext(ContextType.Domain); 
    up = UserPrincipal.FindByIdentity(context, userName); 

    if (up == null) 
    { 
     context = new PrincipalContext(ContextType.Machine); 
     up = UserPrincipal.FindByIdentity(context, userName); 
    } 

    if (up == null) 
     throw new Exception("Unable to get user from Domain or Machine context."); 

    return up; 

} 

protected void GetYear() 
{ 
    DTO objc = new DTO(); 
    { 
     DrpForYear.DataSource = obj.GetYear(); 
     DrpForYear.DataTextField = "Year"; 
     DrpForYear.DataBind(); 
    } 
} 

protected void GetMonth() 
{ 
    DTO objc = new DTO(); 
    { 
     DrpForMonth.DataSource = obj.GetMonth(); ; 
     DrpForMonth.DataTextField = "Month"; 
     DrpForMonth.DataBind(); 
    } 
} 

public void GrdGetComments() 
{ 
    DTO objc = new DTO(); 
    { 
     objc.LogdInUsername = Convert.ToString(Session["LogdInUsername"]); 
     DataSet GrdVC = obj.GetButtonComment(objc); 
     DataView GrdViewC = new DataView(); 
     GrdViewC.Table = GrdVC.Tables[0]; 
     gvData.DataSource = GrdViewC; 
     gvData.DataBind(); 
    } 
} 

protected void BtnSave_Click(object sender, EventArgs e) 
{ 
    DTO objc = new DTO(); 

    int Flag = 0; 

    LblLogdInUsername.Text = Session["Username"].ToString(); 
    objc.LogdInUsername = LblLogdInUsername.Text; 
    objc.DateTime = DateTime.Now; 
    objc.Comments = TxtComments.Text; 
    objc.Company = LblCompany.Text; 

    LblName.Text = Session["Name"].ToString(); 
    objc.Name = LblName.Text; 
    objc.Year = DrpForYear.SelectedItem.Text; 
    objc.Month = DrpForMonth.SelectedItem.Text; 
    objc.ViewPreference = RadView.SelectedItem.Text; 

    int X = obj.InsertButtonComment(objc); 

    if (X >= 0) 
    { 
     Flag = 1; 
    } 
    else 
    { 
     Flag = 0; 
    } 

    if (Flag == 1) 
    { 
     LblSuccess.Visible = true; 
     LblSuccess.Text = "Comment Saved"; 
    } 
    else 
    { 
     LblErr.Visible = true; 
     LblErr.Text = "Failed To Save Comment!!!"; 
    } 

    objc.LogdInUsername = Convert.ToString(Session["LogdInUsername"]); 
    DataSet GrdVC = obj.GetButtonComment(objc); 
    DataView GrdViewC = new DataView(); 
    GrdViewC.Table = GrdVC.Tables[0]; 
    gvData.DataSource = GrdViewC; 
    gvData.DataBind(); 

    TxtComments.Text = ""; 
    DrpForYear.ClearSelection(); 
    DrpForMonth.ClearSelection(); 
    RadView.Text = ""; 
} 

protected void gvData_RowEditing(object sender, GridViewEditEventArgs e) 
{ 
    gvData.EditIndex = e.NewEditIndex; 
    GrdGetComments(); 
} 

protected void gvData_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e) 
{ 
    gvData.EditIndex = -1; 
    GrdGetComments(); 

} 

protected void gvData_RowUpdating(object sender, GridViewUpdateEventArgs e) 
{ 
    DTO objc = new DTO(); 

    Label lblBtnID = (Label)gvData.Rows[e.RowIndex].FindControl("lblBtnID"); 
    Label lblLogdInUsername = (Label)gvData.Rows[e.RowIndex].FindControl("lblLogdInUsername"); 
    Label lblYear = (Label)gvData.Rows[e.RowIndex].FindControl("lblYear"); 
    Label lblMonth = (Label)gvData.Rows[e.RowIndex].FindControl("lblMonth"); 
    Label lblComments = (Label)gvData.Rows[e.RowIndex].FindControl("lblComments"); 
    TextBox txtComments = (TextBox)gvData.Rows[e.RowIndex].FindControl("TxtComments"); 

    LblLogdInUsername.Text = Session["Username"].ToString(); 
    objc.LogdInUsername = LblLogdInUsername.Text; 
    objc.Comments = TxtComments.Text; 
    objc.BtnID = Convert.ToInt32(Session["BtnID"]); 

    int Flag = 0; 

    int X = obj.UpdategvData(objc); 
    { 
     if (X >= 0) 
     { 
      Flag = 1; 
     } 
     else 
     { 
      Flag = 0; 
     } 
    } 

    if (Flag == 1) 
    { 
     LblSuccss.Visible = true; 
     LblSuccss.Text = "Comment Updated"; 
    } 
    else 
    { 
     LblErrr.Visible = true; 
     LblErrr.Text = "Failed To Update Comment!!!"; 
    } 
} 

public int UpdategvData(InLogDTO b) 
    { 
     DBAccess db = new DBAccess(); 
     SqlParameter objParam = new SqlParameter("@LogdInUsername", b.LogdInUsername); 
     objParam.Direction = ParameterDirection.Input; 
     objParam.Size = 50; 

     db.Parameters.Add(new SqlParameter("@Comments", b.Comments)); 
     db.Parameters.Add(new SqlParameter("@BtnID", b.BtnID)); 
     db.Parameters.Add(objParam); 

     int retval = db.ExecuteNonQuery("UpdategvData"); 

     if (retval >= 1) 
     { 
      int i = 0; 
      return i; 
     } 
     else 
     { 
      return -1; 
     } 
    } 

저장 프로 시저

ALTER PROCEDURE [dbo].[UpdategvData] 
    @LogdInUsername nvarchar(50) , 
    @Comments nvarchar(50), 
    @BtnID int 
AS 
    Update dbo.Button_Comments 
     Set Comments = @Comments 
     Where LogdInUsername = @LogdInUsername and ViewPreference = 'Public' and 
     Comments = @Comments and BtnID = @BtnID; 

Answer 1

GrdGetComments(); 편집 후 (저장하지 않고) 다시 gridview에 결합하여 Page_Load에서 실행됩니다. 이 번호는 (!IsPostBack)이어야합니다.

페이지 수명주기는 Page_Load 항상 다른 버튼을 클릭하기 전에 실행을 나타냅니다 : http://msdn.microsoft.com/en-us/library/ms178472(v=vs.90).aspx

당신은 당신의 gridviewif (!IsPostBack) 내부에 결합 할 필요가있다.

저장 프로 시저에도 반환 값이 필요합니다. 예를 들어 return을 끝에 추가하면 C# 코드에서이 값을 가져올 수 있습니다.