C# 允许动态gridview的分页
我有一个动态创建步骤的向导控件。每个步骤都包含一个gridview控件，该控件也是动态创建的 该页面允许用户上载多个excel文件，然后在向导控件中显示这些文件。更具体地说，文件显示在GridView中，GridView是在向导控件的步骤中动态创建的 如何以编程方式启用每个gridview的分页？标记如下所示：C# 允许动态gridview的分页,c#,asp.net,gridview,C#,Asp.net,Gridview,我有一个动态创建步骤的向导控件。每个步骤都包含一个gridview控件，该控件也是动态创建的 该页面允许用户上载多个excel文件，然后在向导控件中显示这些文件。更具体地说，文件显示在GridView中，GridView是在向导控件的步骤中动态创建的 如何以编程方式启用每个gridview的分页？标记如下所示： <%@ Page Title="" Language="C#" MasterPageFile="~/MasterPages/Frontend.master" AutoEve
<%@ Page Title="" Language="C#" MasterPageFile="~/MasterPages/Frontend.master" AutoEventWireup="true" CodeFile="FileUpload_Multi.aspx.cs" Inherits="Analysis_Files_FileUpload_Multi" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="cpMainContent" Runat="Server">
<span style="font-family: Arial">Supported file formats: .csv, .xls, .xlsx<br />
<br />
Click to add files</span>
<asp:Button ID="btnAdd" Text="Add" OnClick="OnAdd" runat="server" />
<asp:Panel ID="pnlTemp" runat="server">
</asp:Panel>
<br />
<asp:Button ID="btnUpload" runat="server" Text="Upload" OnClick="btnUpload_Click" />
<asp:Label ID="lbl_upload" runat="server" Text="No file added!"
Visible="False"></asp:Label>
<asp:Label ID="lbl_fileformat" runat="server" Text="File format not supported!" Visible="False"></asp:Label>
<br />
<br />
<asp:Panel id="wizardPanel" runat="server" >
</asp:Panel>
<br />
</asp:Content>
protected void btnUpload_Click(object sender, EventArgs e)
{
if (Request.Files.Count == 0)
{
this.pnlTemp.Controls.Clear();
lbl_upload.Visible = true;
}
else
{
this.pnlTemp.Controls.Clear();
Wizard gvWizard = new Wizard();
for (int i = 0; i < Request.Files.Count; i++)
{
HttpPostedFile PostedFile = Request.Files[i];
if (PostedFile.ContentLength > 0)
{
string ConStr = "";
string ext = Path.GetExtension(PostedFile.FileName).ToLower();
string FileName = System.IO.Path.GetFileName(PostedFile.FileName);
string path = Server.MapPath("~/Analysis/Files/" + FileName);
PostedFile.SaveAs(Server.MapPath("Files\\") + FileName); //save file to drive for future use
WizardStepBase newStep = new WizardStep();
newStep.ID = "uploadFile" + (i + 1);
newStep.Title = FileName;
if (ext.Trim() == ".xls")
{
//connection string for that file which extantion is .xls
ConStr = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + path + ";Extended Properties=\"Excel 8.0;HDR=Yes;IMEX=2\"";
}
else if (ext.Trim() == ".xlsx")
{
//connection string for that file which extantion is .xlsx
ConStr = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + path + ";Extended Properties=\"Excel 12.0;HDR=Yes;IMEX=2\"";
}
else if (ext.Trim() == ".csv") //not working yet!
{
ConStr = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + path + ";Extended Properties='text;HDR=YES;FMT=CSVDelimited'";
}
else
{
lbl_fileformat.Visible = true;
break;
}
GridView gridview = new GridView();
gridview.ID = "gd" + (i + 1);
//bind gridview
string query = "SELECT * FROM [Sheet1$]";
//Providing connection
OleDbConnection conn = new OleDbConnection(ConStr);
//checking that connection state is closed or not if closed the
//open the connection
if (conn.State == ConnectionState.Closed)
{
conn.Open();
}
//create command object
OleDbCommand cmd = new OleDbCommand(query, conn);
// create a data adapter and get the data into dataadapter
OleDbDataAdapter da = new OleDbDataAdapter(cmd);
DataSet ds = new DataSet();
//fill the Excel data to data set
da.Fill(ds);
//set data source of the grid view
gridview.DataSource = ds.Tables[0];
//binding the gridview
gridview.DataBind();
//close the connection
conn.Close();
newStep.Controls.Add(gridview);
gvWizard.WizardSteps.Add(newStep);
}
else
{
this.pnlTemp.Controls.Clear();
lbl_upload.Visible = true;
}
}
wizardPanel.Controls.Add(gvWizard);
gvWizard.FinishCompleteButtonText = "Analyze data";
}
}
支持的文件格式：.csv、.xls、.xlsx
单击以添加文件
<%@ Page Title="" Language="C#" MasterPageFile="~/MasterPages/Frontend.master" AutoEventWireup="true" CodeFile="FileUpload_Multi.aspx.cs" Inherits="Analysis_Files_FileUpload_Multi" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="cpMainContent" Runat="Server">
<span style="font-family: Arial">Supported file formats: .csv, .xls, .xlsx<br />
<br />
Click to add files</span>
<asp:Button ID="btnAdd" Text="Add" OnClick="OnAdd" runat="server" />
<asp:Panel ID="pnlTemp" runat="server">
</asp:Panel>
<br />
<asp:Button ID="btnUpload" runat="server" Text="Upload" OnClick="btnUpload_Click" />
<asp:Label ID="lbl_upload" runat="server" Text="No file added!"
Visible="False"></asp:Label>
<asp:Label ID="lbl_fileformat" runat="server" Text="File format not supported!" Visible="False"></asp:Label>
<br />
<br />
<asp:Panel id="wizardPanel" runat="server" >
</asp:Panel>
<br />
</asp:Content>
protected void btnUpload_Click(object sender, EventArgs e)
{
if (Request.Files.Count == 0)
{
this.pnlTemp.Controls.Clear();
lbl_upload.Visible = true;
}
else
{
this.pnlTemp.Controls.Clear();
Wizard gvWizard = new Wizard();
for (int i = 0; i < Request.Files.Count; i++)
{
HttpPostedFile PostedFile = Request.Files[i];
if (PostedFile.ContentLength > 0)
{
string ConStr = "";
string ext = Path.GetExtension(PostedFile.FileName).ToLower();
string FileName = System.IO.Path.GetFileName(PostedFile.FileName);
string path = Server.MapPath("~/Analysis/Files/" + FileName);
PostedFile.SaveAs(Server.MapPath("Files\\") + FileName); //save file to drive for future use
WizardStepBase newStep = new WizardStep();
newStep.ID = "uploadFile" + (i + 1);
newStep.Title = FileName;
if (ext.Trim() == ".xls")
{
//connection string for that file which extantion is .xls
ConStr = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + path + ";Extended Properties=\"Excel 8.0;HDR=Yes;IMEX=2\"";
}
else if (ext.Trim() == ".xlsx")
{
//connection string for that file which extantion is .xlsx
ConStr = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + path + ";Extended Properties=\"Excel 12.0;HDR=Yes;IMEX=2\"";
}
else if (ext.Trim() == ".csv") //not working yet!
{
ConStr = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + path + ";Extended Properties='text;HDR=YES;FMT=CSVDelimited'";
}
else
{
lbl_fileformat.Visible = true;
break;
}
GridView gridview = new GridView();
gridview.ID = "gd" + (i + 1);
//bind gridview
string query = "SELECT * FROM [Sheet1$]";
//Providing connection
OleDbConnection conn = new OleDbConnection(ConStr);
//checking that connection state is closed or not if closed the
//open the connection
if (conn.State == ConnectionState.Closed)
{
conn.Open();
}
//create command object
OleDbCommand cmd = new OleDbCommand(query, conn);
// create a data adapter and get the data into dataadapter
OleDbDataAdapter da = new OleDbDataAdapter(cmd);
DataSet ds = new DataSet();
//fill the Excel data to data set
da.Fill(ds);
//set data source of the grid view
gridview.DataSource = ds.Tables[0];
//binding the gridview
gridview.DataBind();
//close the connection
conn.Close();
newStep.Controls.Add(gridview);
gvWizard.WizardSteps.Add(newStep);
}
else
{
this.pnlTemp.Controls.Clear();
lbl_upload.Visible = true;
}
}
wizardPanel.Controls.Add(gvWizard);
gvWizard.FinishCompleteButtonText = "Analyze data";
}
}
protectedvoidbtnupload\u单击（对象发送方，事件参数e）
{
if（Request.Files.Count==0）
{
this.pnlTemp.Controls.Clear（）；
lbl_upload.Visible=true；
}
其他的
{
this.pnlTemp.Controls.Clear（）；
向导gvWizard=新建向导（）；
对于（int i=0；i0）
{
字符串ConStr=“”；
字符串ext=Path.GetExtension（PostedFile.FileName）.ToLower（）；
字符串FileName=System.IO.Path.GetFileName（PostedFile.FileName）；
字符串路径=Server.MapPath（“~/Analysis/Files/”+文件名）；
PostedFile.SaveAs（Server.MapPath（“Files\\”）+文件名）；//将文件保存到驱动器以备将来使用
WizardStepBase newStep=新建WizardStep（）；
newStep.ID=“uploadFile”+（i+1）；
newStep.Title=文件名；
如果（外部修剪（）=“.xls”）
{
//extantion为.xls的文件的连接字符串
ConStr=“Provider=Microsoft.Jet.OLEDB.4.0；数据源=“+path+”“扩展属性=\”Excel 8.0；HDR=Yes；IMEX=2\”；
}
else if（ext.Trim（）=“.xlsx”）
{
//extantion为.xlsx的文件的连接字符串
ConStr=“Provider=Microsoft.ACE.OLEDB.12.0；数据源=“+path+”“扩展属性=\”Excel 12.0；HDR=Yes；IMEX=2\”；
}
else if（ext.Trim（）==“.csv”）//尚未工作！
{
ConStr=“Provider=Microsoft.ACE.OLEDB.12.0；数据源=“+path+”；扩展属性='text；HDR=YES；FMT=CSVDelimited'；
}
其他的
{
lbl_fileformat.Visible=true；
打破
}
GridView GridView=新的GridView（）；
gridview.ID=“gd”+（i+1）；
//绑定网格视图
string query=“从[Sheet1$]中选择*”；
//提供连接
OLEDB连接连接=新OLEDB连接（连接）；
//检查连接状态是否已关闭（如果已关闭）
//打开连接
if（conn.State==ConnectionState.Closed）
{
conn.Open（）；
}
//创建命令对象
OleDbCommand cmd=新的OleDbCommand（查询，连接）；
//创建一个数据适配器并将数据放入dataadapter
OleDbDataAdapter da=新的OleDbDataAdapter（cmd）；
数据集ds=新数据集（）；
//将Excel数据填入数据集
da.填充（ds）；
//设置网格视图的数据源
gridview.DataSource=ds.Tables[0]；
//绑定gridview
gridview.DataBind（）；
//关闭连接
康涅狄格州关闭（）；
添加（gridview）；
gvWizard.WizardSteps.Add（newStep）；
}
其他的
{
this.pnlTemp.Controls.Clear（）；
lbl_upload.Visible=true；
}
}
wizardPanel.Controls.Add（向导）；
gvWizard.finishcompletebuttonext=“分析数据”；
}
}
GridView1.DataSource = ds.Tables[0];
GridView1.AllowPaging = true;
GridView1.PageSize = 50;
GridView1.PageIndexChanged += GridView1_PageIndexChanged;
GridView1.DataBind();