我成功地从ButtonOk_Click（）的Modal Popup Extender按钮单击事件中删除了DataTable中的行。
但是当DataBind（）再次在ButtonOk_Click（）
的GridView中显示错误我在CustomersGridView_RowDataBound的下一行收到错误 if（Convert.ToInt32（e.Row.Cells [10] .Text）== 0）
可能是因为e.Row.Cells [10]。删除后绑定数据时，文本没有正确获取值。
<asp:ScriptManagerID="ScriptManager1"runat="server">
</asp:ScriptManager>
<asp:GridViewID="grdOrgListData"runat="server"AllowPaging="True"AutoGenerateColumns="False"onrowdatabound="CustomersGridView_RowDataBound"
CssClass="tabletable-bordered"OnPageIndexChanging="grdOrgListData_PageIndexChanging">
<Columns>
<asp:BoundFieldDataField="OrgID"HeaderText="ID"/>
<asp:BoundFieldDataField="OrgName"HeaderText="Name"ReadOnly="True"/>
<asp:BoundFieldDataField="OrgDescription"HeaderText="Description"/>
<asp:BoundFieldDataField="OrgAddress"HeaderText="Address"/>
<asp:BoundFieldDataField="OrgZipCode"HeaderText="ZipCode"/>
<asp:BoundFieldDataField="OrgCountry"HeaderText="Country"ReadOnly="True"/>
<asp:BoundFieldDataField="OrgEmail"HeaderText="Email"ReadOnly="True"/>
<asp:BoundFieldDataField="OrgPhoneNo"HeaderText="PhoneNo"/>
<asp:BoundFieldDataField="OrgWebsite"HeaderText="Website"ReadOnly="True"/>
<asp:BoundFieldDataField="EmailID"HeaderText="OwnerEmail"/>
<asp:BoundFieldDataField="ActiveStatus"HeaderText="ActiveStatus"/>
<asp:TemplateFieldHeaderText="Actions">
<ItemTemplate>
<asp:ImageButtonrunat="server"ID="imgBtnView"OnClick="imgBtnView_Click"/>
<asp:ImageButtonrunat="server"ID="imgBtnEdit"OnClick="imgBtnEdit_Click"/>
<asp:ImageButtonrunat="server"ID="imgBtnDelete"OnClick="imgBtnDelete_Click"/>
<asp:ImageButtonrunat="server"ID="imgBtnActive"OnClick="imgBtnActive_Click"/>
</ItemTemplate>
</asp:TemplateField>
</Columns>
<editrowstyleBackColor="#999999"></editrowstyle>
<footerstyleBackColor="#5D7B9D"Font-Bold="True"ForeColor="White"></footerstyle>
<headerstyleBackColor="#5D7B9D"Font-Bold="True"ForeColor="White"></headerstyle>
<rowstyleBackColor="#F7F6F3"ForeColor="#333333"></rowstyle>
<selectedrowstyleBackColor="#E2DED6"Font-Bold="True"ForeColor="#333333"></selectedrowstyle>
<sortedascendingcellstyleBackColor="#E9E7E2"></sortedascendingcellstyle>
<pagersettingsmode="Numeric"position="Bottom"pagebuttoncount="10"/>
<pagerstyleHorizontalAlign="right"CssClass="pagination-ys"/>
</asp:GridView>
<asp:ButtonID="btnShowPopupView"runat="server"style="display:none"/>
<asp:ButtonID="btnShowPopupDelete"runat="server"style="display:none"/>
<ajaxToolkit:ModalPopupExtenderID="ModalPopupExtender1"runat="server"TargetControlID="btnShowPopupView"Drag="true"
PopupControlID="PNLView"OkControlID="ButtonClose"BackgroundCssClass="modalBackground"/>
<ajaxToolkit:ModalPopupExtenderID="ModalPopupExtender2"runat="server"TargetControlID="btnShowPopupDelete"Drag="true"
PopupControlID="PNLDelete"OkControlID="ButtonOk"CancelControlID="ButtonCancel"BackgroundCssClass="modalBackground"/>
<asp:PanelID="PNLView"runat="server"Style="display:none;width:350px;background-color:White;border-width:2px;border-color:Black;border-style:solid;padding:20px;">
OrgID:<asp:LabelID="lblOrgID"runat="server"></asp:Label><br/>
OrgName:<asp:LabelID="lblOrgName"runat="server"></asp:Label><br/>
Desciption:<asp:LabelID="lblOrgDescription"runat="server"></asp:Label><br/>
MailAddress:<asp:LabelID="lblOrgAddress"runat="server"></asp:Label><br/>
ZipCode:<asp:LabelID="lblOrgZipCode"runat="server"></asp:Label><br/>
Country:<asp:LabelID="lblOrgCountry"runat="server"></asp:Label><br/>
Email:<asp:LabelID="lblOrgEmail"runat="server"></asp:Label><br/>
PhoneNo:<asp:LabelID="lblOrgPhoneNo"runat="server"></asp:Label><br/>
Website:<asp:LabelID="lblOrgWebsite"runat="server"></asp:Label><br/>
OwnerEmail:<asp:LabelID="lblOwnerEmail"runat="server"></asp:Label><br/>
ActiveStatus:<asp:LabelID="lblActiveStatus"runat="server"></asp:Label><br/>
<br/>
<br/>
<divstyle="text-align:right;">
<asp:ButtonID="ButtonClose"runat="server"Text="Close"CssClass="btnbtn-smbtn-primarym-t-n-xs"/>
</div>
</asp:Panel>
<asp:PanelID="PNLDelete"runat="server"Style="display:none;width:300px;background-color:White;border-width:2px;border-color:Black;border-style:solid;padding:20px;">
OrgName:<asp:LabelID="lblOrgDelete"runat="server"></asp:Label>
<br/>
Doyouwanttodeletethisorganisation?
<br/>
<br/>
<divstyle="text-align:right;">
<asp:ButtonID="ButtonOk"runat="server"Text="OK"CssClass="btnbtn-smbtn-primarym-t-n-xs"
OnClick="ButtonOk_Click"UseSubmitBehavior="false"/>
<asp:ButtonID="ButtonCancel"runat="server"Text="Cancel"CssClass="btnbtn-smbtn-primarym-t-n-xs"/>
</div>
</asp:Panel>
===========================================
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.Sql;
using System.Data.SqlClient;
using System.Windows.Forms;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Diagnostics;
using System.Drawing;
namespace PseudoExam.AdminPanel
{
public partial class Organisation : System.Web.UI.Page
{
protected void btnAdd_click(object sender, EventArgs e)
{
Server.Transfer("/AdminPanel/Organisation.Add.aspx");
}
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
LoadGridData();
}
private void LoadGridData()
{
string strOrgAdminIDs = Convert.ToString(Session["OrgAdminIDs"]);
DataTable ds = DBOperations.GetOrgDataset(strOrgAdminIDs);
ds.PrimaryKey = new DataColumn[] { ds.Columns["OrgID"] };
string strLabel = "Showing 0 to 0 of 0 records";
Session["OrgDataSet"] = ds;
if (ds != null)
{
if (ds.Rows.Count != 0)
{
grdOrgListData.DataSource = ds;
grdOrgListData.DataBind();
grdOrgListData.Columns[0].Visible = false;
grdOrgListData.Columns[2].Visible = false;
grdOrgListData.Columns[3].Visible = false;
grdOrgListData.Columns[4].Visible = false;
grdOrgListData.Columns[7].Visible = false;
grdOrgListData.Columns[9].Visible = false;
grdOrgListData.Columns[10].Visible = false;
if (ds.Rows.Count > 0 && ds.Rows.Count > 9)
strLabel = "Showing 1 to 10 of " + ds.Rows.Count + " records";
else if (ds.Rows.Count > 0 && ds.Rows.Count <= 9)
strLabel = "Showing 1 to " + ds.Rows.Count + " of " + ds.Rows.Count + " records";
}
else
{
grdOrgListData.DataSource = null;
grdOrgListData.DataBind();
}
}
lblRecordStatus.Text = strLabel;
}
protected void grdOrgListData_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
DataTable ds = new DataTable();
ds = (DataTable)Session["OrgDataSet"];
string strLabel = "Showing 0 to 0 of 0 records";
if (ds != null)
{
grdOrgListData.PageIndex = e.NewPageIndex;
grdOrgListData.DataSource = ds;
grdOrgListData.DataBind();
if (ds.Rows.Count > 0)
{
int intFrom = (e.NewPageIndex * 10) + 1;
int intTo = (e.NewPageIndex * 10) + 10;
if (intFrom == ds.Rows.Count)
strLabel = "Showing " + intFrom + " to " + ds.Rows.Count + " of " + ds.Rows.Count + " records";
else if (intFrom < ds.Rows.Count && intTo >= ds.Rows.Count)
strLabel = "Showing " + intFrom + " to " + ds.Rows.Count + " of " + ds.Rows.Count + " records";
else if (intFrom < ds.Rows.Count && intTo < ds.Rows.Count)
strLabel = "Showing " + intFrom + " to " + intTo + " of " + ds.Rows.Count + " records";
}
}
else
{
grdOrgListData.PageIndex = e.NewPageIndex;
grdOrgListData.DataSource = null;
grdOrgListData.DataBind();
}
lblRecordStatus.Text = strLabel;
}
protected void CustomersGridView_RowDataBound(Object sender, GridViewRowEventArgs e)
{
int intUserRole = Convert.ToInt32(Session["UserRole"]);
if ((intUserRole == 0) || (intUserRole == 1))
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
ImageButton PlaceHolderView1 = e.Row.FindControl("imgBtnView") as ImageButton;
PlaceHolderView1.ImageUrl = "../images/system/View_B.png";
ImageButton PlaceHolderView2 = e.Row.FindControl("imgBtnEdit") as ImageButton;
PlaceHolderView2.ImageUrl = "../images/system/Edit_B.png";
MessageBox.Show("e.Row.Cells[] = " + e.Row.Cells[0].Text + " ,= " + e.Row.Cells[1].Text + " ,= " + e.Row.Cells[2].Text + " ,= " + e.Row.Cells[10].Text);
if (Convert.ToInt32(e.Row.Cells[10].Text) == 0)
{
ImageButton PlaceHolderView3 = e.Row.FindControl("imgBtnDelete") as ImageButton;
PlaceHolderView3.ImageUrl = "../images/system/Delete_G.png";
PlaceHolderView3.Enabled = false;
ImageButton PlaceHolderView4 = e.Row.FindControl("imgBtnActive") as ImageButton;
PlaceHolderView4.ImageUrl = "../images/system/Play_B.png";
}
else if (Convert.ToInt32(e.Row.Cells[10].Text) == 1)
{
ImageButton PlaceHolderView3 = e.Row.FindControl("imgBtnDelete") as ImageButton;
PlaceHolderView3.ImageUrl = "../images/system/Delete_B.png";
ImageButton PlaceHolderView4 = e.Row.FindControl("imgBtnActive") as ImageButton;
PlaceHolderView4.ImageUrl = "../images/system/Play_G.png";
PlaceHolderView4.Enabled = false;
}
else if (Convert.ToInt32(e.Row.Cells[10].Text) == 2)
{
ImageButton PlaceHolderView3 = e.Row.FindControl("imgBtnDelete") as ImageButton;
PlaceHolderView3.ImageUrl = "../images/system/Delete_G.png";
PlaceHolderView3.Enabled = false;
ImageButton PlaceHolderView4 = e.Row.FindControl("imgBtnActive") as ImageButton;
PlaceHolderView4.ImageUrl = "../images/system/Play_G.png";
PlaceHolderView4.Enabled = false;
}
}
}
}
protected void imgBtnView_Click(object sender, ImageClickEventArgs e)
{
ImageButton btndetails = sender as ImageButton;
GridViewRow gvrow = (GridViewRow)btndetails.NamingContainer;
lblOrgID.Text = gvrow.Cells[0].Text;
lblOrgName.Text = gvrow.Cells[1].Text;
lblOrgDescription.Text = gvrow.Cells[2].Text;
lblOrgAddress.Text = gvrow.Cells[3].Text;
lblOrgZipCode.Text = gvrow.Cells[4].Text;
lblOrgCountry.Text = gvrow.Cells[5].Text;
lblOrgEmail.Text = gvrow.Cells[6].Text;
lblOrgPhoneNo.Text = gvrow.Cells[7].Text;
lblOrgWebsite.Text = gvrow.Cells[8].Text;
lblOwnerEmail.Text = gvrow.Cells[9].Text;
lblActiveStatus.Text = gvrow.Cells[10].Text;
this.ModalPopupExtender1.Show();
}
//Whether a particular data needs to be deleted or not
protected void imgBtnDelete_Click(object sender, ImageClickEventArgs e)
{
ImageButton btndetails = sender as ImageButton;
GridViewRow gvrow = (GridViewRow)btndetails.NamingContainer;
Session["OrgDeleteRecord"] = gvrow.Cells[0].Text;
lblOrgDelete.Text = gvrow.Cells[1].Text;
this.ModalPopupExtender2.Show();
}
//Clicked OK to delete a record from the DB and Grid
protected void ButtonOk_Click(object sender, EventArgs e)
{
string strDeleteRecord = (string)Session["OrgDeleteRecord"];
int intOrgRowIndex = (int)Session["OrgRowIndex"];
DataTable dt = new DataTable();
dt = (DataTable)Session["OrgDataSet"];
DataRow[] rows;
rows = dt.Select("OrgID='" + strDeleteRecord + "'");
foreach (DataRow row in rows)
dt.Rows.Remove(row);
grdOrgListData.DataSource = dt;
grdOrgListData.DataBind();
Session["OrgDataSet"] = dt;
}
protected void imgBtnEdit_Click(object sender, ImageClickEventArgs e)
{
}
protected void imgBtnActive_Click(object sender, EventArgs e)
{
}
}
}
答案 0 :(得分：0)
protected void ButtonOk_Click(object sender, EventArgs e)
{
string strDeleteRecord = (string)Session["OrgDeleteRecord"];
int intOrgRowIndex = (int)Session["OrgRowIndex"];
DataTable dt = new DataTable();
dt = (DataTable)Session["OrgDataSet"];
DataRow[] rows;
rows = dt.Select("OrgID='" + strDeleteRecord + "'");
foreach (DataRow row in rows)
dt.Rows.Remove(row);
//here you can call your LoadGridData() After Delete;
this.LoadGridData();
Session["OrgDataSet"] = dt;
}
答案 1 :(得分：0)
此错误是因为我使GridView中的某些列不可见。首先我明白了;然后数据绑定;然后再次变得无形。这很有效。
//Making all columns in GridView visible to rebind the data
//Otherwise DataBind() will not work as there is checking at ActiveStatus[].
for (int i = 0; i < 11; i++)
grdOrgListData.Columns[i].Visible = true;
grdOrgListData.DataSource = ds;
grdOrgListData.DataBind();
grdOrgListData.Columns[0].Visible = false;
grdOrgListData.Columns[2].Visible = false;
grdOrgListData.Columns[3].Visible = false;
grdOrgListData.Columns[4].Visible = false;
grdOrgListData.Columns[7].Visible = false;
grdOrgListData.Columns[9].Visible = false;
grdOrgListData.Columns[10].Visible = false;