作者：乔山办公网日期：
返回目录：excel表格制作
被更新的表必须有主键。
你上面Fill方法上面注释两行是什么时候注释的，Fill后马上就update也没什么意义。
1、方法一：采用OleDB读取EXCEL文件：
把EXCEL文件当做一个7a686964616fe4b893e5b19e338数据源来进行数据的读取操作，实例如下：
public DataSet ExcelToDS(string Path)
{
string
strConn = "Provider=Microsoft.Jet.OLEDB.4.0;" +"Data Source="+ Path
+";"+"Extended Properties=Excel 8.0;";
OleDbConnection conn = new
OleDbConnection(strConn);
conn.Open();
string strExcel =
"";
OleDbDataAdapter myCommand = null;
DataSet ds =
null;
strExcel="select * from [sheet1$]";
myCommand = new
OleDbDataAdapter(strExcel, strConn);
ds = new
DataSet();
myCommand.Fill(ds,"table1");
return
ds;
}
对于EXCEL中的表即sheet([sheet1$])如果不是固定的可以使用下面的方法得到
string strConn = "Provider=Microsoft.Jet.OLEDB.4.0;"
+"Data Source="+ Path +";"+"Extended Properties=Excel 8.0;";
OleDbConnection
conn = new OleDbConnection(strConn);
DataTable schemaTable =
objConn.GetOleDbSchemaTable(System.Data.OleDb.OleDbSchemaGuid.Tables,null);
string
tableName=schemaTable.Rows[0][2].ToString().Trim();
另外：也可进行写入EXCEL文件，实例如下：
public void DSToExcel(string Path,DataSet
oldds)
{
//先得到汇总EXCEL的DataSet 主要目的是获得EXCEL在DataSet中的结构
string strCon =
" Provider = Microsoft.Jet.OLEDB.4.0 ; Data Source ="+path1+";Extended
Properties=Excel 8.0" ;
OleDbConnection myConn = new OleDbConnection(strCon)
;
string strCom="select * from [Sheet1$]";
myConn.Open ( ) ;
OleDbDataAdapter myCommand = new OleDbDataAdapter (
strCom, myConn ) ;
ystem.Data.OleDb.OleDbCommandBuilder builder=new
OleDbCommandBuilder(myCommand);
//QuotePrefix和QuoteSuffix主要是对builder生成InsertComment命令时使用。
builder.QuotePrefix="[";
//获取insert语句中保留字符（起始位置）
builder.QuoteSuffix="]";
//获取insert语句中保留字符（结束位置）
DataSet newds=new DataSet();
myCommand.Fill(newds
,"Table1") ;
for(int
i=0;i<oldds.Tables[0].Rows.Count;i++)
{
//在这里不能使用ImportRow方法将一行导入到news中，因为ImportRow将保留原来DataRow的所有设置(DataRowState状态不变)。
在使用ImportRow后newds内有值，但不能更新到Excel中因为所有导入行的DataRowState!=Added
DataRow
nrow=aDataSet.Tables["Table1"].NewRow();
for(int
j=0;j<newds.Tables[0].Columns.Count;j++)
{
nrow[j]=oldds.Tables[0].Rows[i][j];
}
newds.Tables["Table1"].Rows.Add(nrow);
}
myCommand.Update(newds,"Table1");
myConn.Close();
}
2、方法二：引用的com组件：Microsoft.Office.Interop.Excel.dll
读取EXCEL文件
首先是Excel.dll的获取,将Office安装目录下的Excel.exe文件Copy到DotNet的bin目录下,cmd到该目录下,运行
TlbImp EXCEL.EXE Excel.dll 得到Dll文件。 点击此处下载此文件：/Files/songliang/DLL文件.rar
再在项目中添加引用该dll文件.
//读取EXCEL的方法
(用范围区域读取数据)
private void OpenExcel(string
strFileName)
{
object missing =
System.Reflection.Missing.Value;
Application excel = new Application();//lauch excel
application
if (excel ==
null)
{
Response.Write("<script>alert('Can't access
excel')</script>");
}
else
{
excel.Visible = false; excel.UserControl =
true;
//
以只读的形式打开EXCEL文件
Workbook wb = excel.Application.Workbooks.Open(strFileName, missing, true,
missing, missing,
missing,
missing, missing, missing, true, missing, missing, missing, missing,
missing);
//取得第一个工作薄
Worksheet ws = (Worksheet)wb.Worksheets.get_Item(1);
//取得总记录行数
(包括标题列)
int rowsint = ws.UsedRange.Cells.Rows.Count;
//得到行数
//int columnsint = mySheet.UsedRange.Cells.Columns.Count;//得到列数
//取得数据范围区域
(不包括标题列)
Range rng1 = ws.Cells.get_Range("B2", "B" + rowsint);
//item
Range rng2 = ws.Cells.get_Range("K2", "K" + rowsint);
//Customer
object[,] arryItem= (object[,])rng1.Value2; //get range's
value
object[,] arryCus =
(object[,])rng2.Value2;
//将新值赋给一个数组
string[,] arry = new string[rowsint-1,
2];
for
(int i = 1; i <= rowsint-1;
i++)
{
//Item_Code列
arry[i - 1, 0] =arryItem[i,
1].ToString();
//Customer_Name列
arry[i - 1, 1] = arryCus[i,
1].ToString();
}
Response.Write(arry[0, 0] + " / " + arry[0, 1] + "#" + arry[rowsint - 2, 0] + "
/ " + arry[rowsint - 2, 1]);
}
excel.Quit(); excel =
null;
Process[] procs =
Process.GetProcessesByName("excel");
foreach
(Process pro in procs)
{
pro.Kill();//没有更好的方法,只有杀掉进程
}
GC.Collect();
}
3、方法三：将EXCEL文件转化成CSV（逗号分隔）的文件，用文件流读取(等价就是读取一个txt文本文件)。
先引用命名空间:
using System.Text;和using System.IO;
FileStream fs = new FileStream("d:\\Customer.csv", FileMode.Open,
FileAccess.Read,
FileShare.None);
StreamReader sr = new StreamReader(fs,
System.Text.Encoding.GetEncoding(936));
string str = "";
string s =
Console.ReadLine();
while (str !=
null)
{ str =
sr.ReadLine();
string[] xu = new
String[2];
xu =
str.Split(',');
string ser =
xu[0];
string dse =
xu[1];
if (ser ==
s)
{
Console.WriteLine(dse);break;
}
}
sr.Close();
另外也可以将数据库数据导入到一个txt文件，实例如下：
//txt文件名
string fn = DateTime.Now.ToString("yyyyMMddHHmmss") + "-" + "PO014" +
".txt";
OleDbConnection con = new
OleDbConnection(conStr);
con.Open();
string sql = "select
ITEM,REQD_DATE,QTY,PUR_FLG,PO_NUM from
TSD_PO014";
//OleDbCommand mycom = new OleDbCommand("select * from TSD_PO014",
mycon);
//OleDbDataReader myreader
= mycom.ExecuteReader();
//也可以用Reader读取数据
DataSet ds = new
DataSet();
OleDbDataAdapter oda =
new OleDbDataAdapter(sql, con);
oda.Fill(ds, "PO014");
DataTable
dt = ds.Tables[0];
FileStream fs
= new FileStream(Server.MapPath("download/" + fn), FileMode.Create,
FileAccess.ReadWrite);
StreamWriter strmWriter = new StreamWriter(fs);
//存入到文本文件中
//把标题写入.txt文件中
//for (int i = 0; i
<dt.Columns.Count;i++)
//{
//
strmWriter.Write(dt.Columns[i].ColumnName + "
");
//}
foreach (DataRow dr in dt.Rows)
{
string
str0, str1, str2,
str3;
string str = "|";
//数据用"|"分隔开
str0 =
dr[0].ToString();
str1 =
dr[1].ToString();
str2 =
dr[2].ToString();
str3 =
dr[3].ToString();
str4 =
dr[4].ToString().Trim();
strmWriter.Write(str0);
strmWriter.Write(str);
strmWriter.Write(str1);
strmWriter.Write(str);
strmWriter.Write(str2);
strmWriter.Write(str);
strmWriter.Write(str3);
strmWriter.WriteLine(); //换行
}
strmWriter.Flush();
strmWriter.Close();
if (con.State
== ConnectionState.Open)
{
con.Close();
}
public static DataTable ImportExcelToDataSet(string filePath) {
string strConn;
strConn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filePath + ";Extended Properties='Excel 8.0;Imex=1'";
DataTable dt = new DataTable();
OleDbDataAdapter oada = new OleDbDataAdapter("select * from [message$]", strConn);
try
{
oada.Fill(dt);
}
catch (Exception ex)
{
throw new Exception("该Excel文件的工作表的名字设置为 message，以便获取数据" + ex.Message);
}
return dt;
}
这个就是吧excel到如到datatable中 然后你指e69da5e887aae799bee5baa6362定DataGridView的数据源是这个即可
默认情况下这个会吧excel第一行作为datatable的column，
protected void Button1_Click(object sender, EventArgs e)
{
try
{
string fileName = DateTime.Now.ToString("yyyyMMddhhmmss") + "." + MsgBox.getFileLastName(File1.Value);
File1.PostedFile.SaveAs(System.Web.HttpContext.Current.Server.MapPath("~/Excel/" + fileName));
string conn = " Provider = Microsoft.Jet.OLEDB.4.0 ; Data Source =" + Server.MapPath("~/Excel/" + fileName) + ";Extended Properties=Excel 8.0";
OleDbConnection thisconnection = new OleDbConnection(conn);
thisconnection.Open();
string Sql = "select DISTINCT(厂牌e799bee5baa6e58685e5aeb9361) from [Sheet1$]";
OleDbDataAdapter mycommand = new OleDbDataAdapter(Sql, thisconnection);
DataSet ds = new DataSet();
mycommand.Fill(ds);
for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
{
DataTable dt2 = ConString.QuerySql("select * from protype where name='" + ds.Tables[0].Rows[i]["厂牌"].ToString().Replace("'", "") + "' and languageid='" + Session["language"] + "'").Tables[0];
if (dt2.Rows.Count < 1)
{
ConString.ExecuteSql("insert protype (name,languageid)values('" + ds.Tables[0].Rows[i]["厂牌"].ToString().Replace("'", "") + "','" + Session["language"] + "')");
}
}
try
{
DataTable dt = ConString.QuerySql("select * from protype").Tables[0];
for (int i = 0; i < dt.Rows.Count; i++)
{
string name = dt.Rows[i]["name"].ToString();
string id = dt.Rows[i]["id"].ToString();
string Sql2 = "select * from [Sheet1$] where 厂牌='" + name + "'";
OleDbDataAdapter mycommand2 = new OleDbDataAdapter(Sql2, thisconnection);
DataSet ds2 = new DataSet();
mycommand2.Fill(ds2);
for (int ii = 0; ii < ds2.Tables[0].Rows.Count; ii++)
{
DataTable dt3 = ConString.QuerySql("select * from product where name='" + ds2.Tables[0].Rows[ii]["型号"].ToString() + "'and languageid='" + Session["language"] + "'").Tables[0];
if (dt3.Rows.Count < 1)
{
//ConString.ExecuteSql("insert product (type_id,name,num,pice,file1,languageid)values('" + id + "','" + ds2.Tables[0].Rows[ii]["型号"].ToString().Replace("'", "") + "','" + ds2.Tables[0].Rows[ii]["数量"].ToString().Replace("'", "") + "','" + ds2.Tables[0].Rows[ii]["价格"].ToString().Replace("'", "") + "','" + ds2.Tables[0].Rows[ii]["设备描述"].ToString().Replace("'", "") + "','" + Session["language"] + "')");
ConString.ExecuteSql("insert product (type_id,name,num,pice,file1,languageid,shows,top_num,fact,img)values('" + id + "','" + ds2.Tables[0].Rows[ii]["型号"].ToString().Replace("'", "") + "','" + ds2.Tables[0].Rows[ii]["数量"].ToString().Replace("'", "") + "','" + ds2.Tables[0].Rows[ii]["价格"].ToString().Replace("'", "") + "','" + ds2.Tables[0].Rows[ii]["设备描述"].ToString().Replace("'", "") + "','" + Session["language"] + "','" + ds2.Tables[0].Rows[ii]["热门"].ToString().Replace("'", "") + "','" + ds2.Tables[0].Rows[ii]["排序"].ToString().Replace("'", "") + "','" + ds2.Tables[0].Rows[ii]["其他厂牌"].ToString().Replace("'", "") + "','" + ds2.Tables[0].Rows[ii]["图片"].ToString().Replace("'", "") + "')");
}
}
}
}
catch(Exception ex)
{
Response.Write(ex.Message);
Response.End();
}
thisconnection.Close();
File.Delete(Server.MapPath("~/Excel/" + fileName));
MsgBox.alert("导入产品成功~！");
}
catch(Exception ex)
{
MsgBox.alert(ex.Message);
}
}
完全自己编写，如有问题可以HI留言。。。