1.我们在开发操作中，经常会用到Excel操作，其中包括，Excel导入，Excel导出，附件的上传，下载，包括Excel动态导入，我们这里就不讲，主要讲Excel导入，导出操作，而动态的操作，只需要在原来基础上做修改即可。需求图：
2.具体代码实现：
A：Excel导出,其中会因为Excel版本的不同导致导出的成败效果不同，具体情况具体分析解决：
1 #region//导出数据
2 /// <summary>
3 /// /导单
4 /// </summary>
5 /// <param name="sender"></param>
6 /// <param name="e"></param>
7 protected void BtExcelOut_Click1(object sender, EventArgs e)
8 {
9 DataTable dt = getDt();
10 if (dt == null || dt.Rows.Count == 0)
11 {
12 Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "", "<script>alert(‘没有内容！‘)</script>", false);
13 return;
14 }
15 CreateExcel(dt, "DSR已选中社群");
16 }
17 /// <summary>
18 /// 获取筛选数据
19 /// </summary>
20 /// <returns></returns>
21 public DataTable getDt()
22 {
23 SqlConnection conn = SqlHelperEx.ConnOpen("SPSDB");
24 DataTable dt = new DataTable();
25 string lists = Request["itemList"];
26 string[] ids = lists.Split(‘,‘);
27 if (ids.Length > 0 && lists != "")
28 {
29 string strlist = "";
30 for (int k = 0; k < ids.Length; k++)
31 {
32 strlist += ids[k].ToString() + ",";
33 }
34 if (strlist != "" && strlist != null) strlist = strlist.Substring(0, strlist.Length - 1);
35 string strsql = "SELECT (CASE classID WHEN 1 THEN ‘论坛‘ WHEN 2 THEN ‘微信‘ WHEN 3 THEN ‘微博‘ WHEN 4 THEN ‘朋友圈‘ WHEN 5 THEN ‘QQ群‘ ELSE ‘其他‘ END)AS [类型] ,(CASE CategoryID WHEN 1 THEN ‘家具‘ WHEN 2 THEN ‘电商‘ WHEN 3 THEN ‘SNS媒体‘ ELSE ‘其它‘ END) AS [分类] , SNSName AS [网站] ,accountID AS [板块],URL AS [链接], Area AS [地域], fans AS [粉丝(关注)数],IsTiop AS [置顶/天],highlight AS [加精/周], Stars AS [星级], LinkWay AS [直接联系方式],media AS [媒介],SNSContact AS [媒介联系方式] FROM BaseSNSInfo WHERE IsValid=1 AND classID=1 AND ID in (" + strlist + ")";
36 dt = SqlHelperEx.GetDataTable(strsql, conn);
37 SqlHelperEx.ConnClose(conn);
38 }
39 else
40 {
41 string strsql = "SELECT (CASE classID WHEN 1 THEN ‘论坛‘ WHEN 2 THEN ‘微信‘ WHEN 3 THEN ‘微博‘ WHEN 4 THEN ‘朋友圈‘ WHEN 5 THEN ‘QQ群‘ ELSE ‘其他‘ END)AS [类型] ,(CASE CategoryID WHEN 1 THEN ‘家具‘ WHEN 2 THEN ‘电商‘ WHEN 3 THEN ‘SNS媒体‘ ELSE ‘其它‘ END) AS [分类] , SNSName AS [网站] ,accountID AS [板块],URL AS [链接], Area AS [地域], fans AS [粉丝(关注)数],IsTiop AS [置顶/天],highlight AS [加精/周], Stars AS [星级], LinkWay AS [直接联系方式],media AS [媒介],SNSContact AS [媒介联系方式] FROM BaseSNSInfo WHERE IsValid=1 AND classID=1";
42 dt = SqlHelperEx.GetDataTable(strsql, conn);
43 SqlHelperEx.ConnClose(conn);
44 }
45 return dt;
46 }
47 //<summary>
48 //导出到EXcel
49 //</summary>
50 //<param name="dt"></param>
51 //<param name="FileName"></param>
52 public void CreateExcel(DataTable dt, string FileName)
53 {
54 Response.Clear();
55 Response.Charset = "GB2312";
56 Response.ContentEncoding = Encoding.Default;
57 Response.Buffer = true;
58 Response.AppendHeader("Content-Disposition", "attachment;filename=\"" + System.Web.HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8) + ".xls\"");
59 Response.ContentType = "application/ms-excel";
60 string colHeaders = string.Empty;
61 string ls_item = string.Empty;
62 DataRow[] myRow = dt.Select();
63 int i = 0;
64 int cl = dt.Columns.Count;
65 for (int k = 0; k < dt.Columns.Count; k++)
66 {
67 if (k == (dt.Columns.Count - 1))
68 {
69 colHeaders += dt.Columns[k].ToString() + "\n";
70 }
71 else
72 {
73 colHeaders += dt.Columns[k].ToString() + "\t";
74 }
75 }
76 Response.Output.Write(colHeaders);
77 foreach (DataRow row in myRow)
78 {
79 for (i = 0; i < cl; i++)
80 {
81 if (i == (cl - 1))
82 {
83 ls_item += row[i].ToString() + "\n";
84 }
85 else
86 {
87 ls_item += row[i].ToString() + "\t";
88 }
89 }
90 Response.Output.Write(ls_item);
91 ls_item = string.Empty;
92 }
93 Response.Output.Flush();
94 Response.End();
95 }
96 #endregion
3.Excel导入功能，有动态的导入，同时Excel版本也有不同，也会导致导入效果，具体情况具体分析解决：
1 #region 导入数据
2
3 /// <summary>
4 /// 导入
5 /// </summary>
6 /// <param name="sender"></param>
7 /// <param name="e"></param>
8 protected void btnImport_Click(object sender, EventArgs e)
9 {
10 string fileName = UpLoadTxt.FileName;//获取要导入的文件名
11 if (fileName == null || fileName == "")
12 {
13 Response.Write("<script>alert(‘没有要导入的文件,请选中文件后再操作!‘);window.location.href=‘SNSbbsList.aspx‘;</script>");
14 }
15 else
16 {
17 string savePath = Server.MapPath("~/UploadFiles/ChatLog/");
18 DateTime dtnow = System.DateTime.Now;
19 string filename = dtnow.Year.ToString() + dtnow.Month.ToString() + dtnow.Day.ToString() + dtnow.Hour.ToString() + dtnow.Minute.ToString() + dtnow.Second.ToString() + dtnow.Millisecond.ToString();
20 string ExtName = getFileExt(fileName).ToUpper();
21 if (IsConform(ExtName) == false)
22 {
23 Response.Write("<script>alert(‘上传的文件类型不是Excel文件,请核实后再上传!‘);window.location.href=‘SNSbbsList.aspx‘;</script>");
24 }
25 else
26 {
27 filename += "." + ExtName;
28 FileOperatpr(filename, savePath);
29 string url = savePath + filename;
30 UpLoadTxt.SaveAs(url);
31 SqlConnection conn = SqlHelperEx.ConnOpen("SPSDB");
32 Method(conn, url);
33 SqlHelperEx.ConnClose(conn);
34 }
35 }
36 }
37
38
39 #region 辅助功能
40
41 private string getFileExt(string fileName)//获取上传文件的后缀名
42 {
43 if (fileName.IndexOf(".") == -1)
44 return "";
45 string[] temp = fileName.Split(‘.‘);
46 return temp[temp.Length - 1].ToLower();
47 }
48
49 private bool IsConform(string _extname)//判断文件类型是否符合
50 {
51 bool flag = false;
52 if (_extname.ToLower() == "xls" || _extname.ToLower() == "xlsx")
53 {
54 flag = true;
55 }
56 return flag;
57 }
58
59 private void FileOperatpr(string fileName, string savePath)
60 {
61 if (!Directory.Exists(savePath))
62 {
63 Directory.CreateDirectory(savePath);
64 }
65 if (File.Exists(savePath + fileName))
66 {
67 File.Delete(savePath + fileName);
68 }
69 }
70
71 #endregion
72
73 protected void Method(SqlConnection conn, string url)
74 {
75 string istrue = "0";
76 DataTable dt = new DataTable();
77 dt = FromExcelToDataTable(url);
78 if (dt.Rows.Count > 0)
79 {
80 try
81 {
82 istrue = BulkCopy(conn, dt);
83 }
84 catch (Exception ex)
85 {
86 istrue = "0";
87 }
88 if (istrue != "0")
89 {
90 if (istrue != "" && istrue != "1")
91 {
92 Response.Write("<script>alert(‘网站为" + istrue + "出现了重复，请核实后再次操作!‘);window.location.href=‘SNSbbsList.aspx‘;</script>");
93 }
94 if (istrue == "1")
95 {
96 Response.Write("<script>alert(‘导入成功!‘);window.location.href=‘SNSbbsList.aspx‘;</script>");
97 }
98 }
99 else
100 {
101 Response.Write("<script>alert(‘导入失败,请重新查看文件后再上传!‘);window.location.href=‘SNSbbsList.aspx‘;</script>");
102 }
103 }
104 else
105 {
106 Response.Write("<script>alert(‘导入的文件中没有数据或者格式不正确,请核实文件!‘);window.location.href=‘SNSbbsList.aspx‘;</script>");
107 }
108 }
109
110
111 protected DataTable FromExcelToDataTable(string physicalPath)
112 {
113 string strConn = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + physicalPath + ";Extended Properties=‘Excel 8.0;HDR=yes ;IMEX=1‘";
114 // Excel 2007
115 if (physicalPath.ToLower().IndexOf(".xlsx") > 0 && physicalPath.ToLower().EndsWith("xlsx"))
116 {
117 strConn = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=‘" + physicalPath + "‘;Extended Properties=‘Excel 8.0;HDR=yes;IMEX=1‘";
118 }
119 // Excel 2003
120 if (physicalPath.ToLower().IndexOf(".xls") > 0 && physicalPath.ToLower().EndsWith("xls"))
121 {
122 strConn = "Provider=Microsoft.Jet.OLEDB.4.0;Extended Properties=‘Excel 8.0;HDR=YES;‘;Data Source=‘" + physicalPath + "‘";
123 }
124 DataTable dt = new DataTable();
125
126 OleDbConnection conn = new OleDbConnection(strConn);
127 try
128 {
129 if (conn.State.ToString() == "Closed")
130 {
131 conn.Open();
132 }
133 DataTable dtSheet = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "TABLE" });
134 for (int i = 0; i < dtSheet.Rows.Count; i++)
135 {
136 DataSet dst = new DataSet();
137 dst.Clear();
138 string strSheetName = dtSheet.Rows[i]["TABLE_NAME"].ToString();
139 OleDbDataAdapter OleDa = new OleDbDataAdapter("select * from [" + strSheetName + "]", conn);
140 OleDa.Fill(dst, "TableName");
141 DataTable dtnew = dst.Tables[0];
142
143 dt.Columns.Add("classID", typeof(string));
144 dt.Columns.Add("CategoryID", typeof(string));
145 dt.Columns.Add("SNSName", typeof(string));
146 dt.Columns.Add("accountID", typeof(string));
147 dt.Columns.Add("URL", typeof(string));
148 dt.Columns.Add("Area", typeof(string));
149 dt.Columns.Add("fans", typeof(string));
150 dt.Columns.Add("IsTiop", typeof(string));
151 dt.Columns.Add("highlight", typeof(string));
152 dt.Columns.Add("Stars", typeof(string));
153 dt.Columns.Add("LinkWay", typeof(string));
154 dt.Columns.Add("media", typeof(string));
155 dt.Columns.Add("SNSContact", typeof(string));
156
157
158 if (dtnew.Rows.Count > 0)
159 {
160 #region 匹配
161 if (dtnew.Columns.Count >= 13)
162 {
163 for (int j = 0; j < dtnew.Rows.Count; j++)
164 {
165 DataRow row = dt.NewRow();
166 try
167 {
168 row["classID"] = dtnew.Rows[j]["类型"].ToString();
169 row["CategoryID"] =dtnew.Rows[j]["分类"].ToString();
170 row["SNSName"] = dtnew.Rows[j]["网站"].ToString();
171 row["accountID"] = dtnew.Rows[j]["板块"].ToString();
172 row["URL"] = dtnew.Rows[j]["链接"].ToString();
173 row["Area"] = dtnew.Rows[j]["地域"].ToString();
174 row["fans"] = ConvertDigit(dtnew.Rows[j]["粉丝(关注)数"].ToString());
175 row["IsTiop"] = dtnew.Rows[j]["置顶/天"].ToString();
176 row["highlight"] = dtnew.Rows[j]["加精/周"].ToString();
177 row["Stars"] = ConvertDigit(dtnew.Rows[j]["星级"].ToString());
178 row["LinkWay"] = dtnew.Rows[j]["直接联系方式"].ToString();
179 row["media"] = dtnew.Rows[j]["媒介"].ToString();
180 row["SNSContact"] = dtnew.Rows[j]["媒介联系方式"].ToString();
181
182 }
183 catch (Exception)
184 {
185 row = null;
186 }
187 if (row != null)
188 {
189 dt.Rows.Add(row);
190 }
191 }
192 }
193 #endregion
194
195 }
196 }
197
198
199 conn.Close();
200 }
201 catch (Exception ex)
202 {
203 dt = null;
204 }
205 return dt;
206 }
207
208
209 #region 数据转换
210
211
212 protected float ConvertFloat(string numerator, string denominator)
213 {
214 float flag = 0F;
215 try
216 {
217 float _numer = ConvertFloat(numerator);
218 int _denom = ConvertDigit(denominator);//判断分母是否为0
219 if (_denom != 0)
220 {
221 flag = _numer / _denom;
222 }
223 }
224 catch (Exception ex)
225 {
226 flag = 0F;
227 }
228 return flag;
229 }
230
231
232 protected float ConvertFloat(string str)
233 {
234 float flag = 0F;
235 try
236 {
237 flag = float.Parse(str);
238 }
239 catch (Exception ex)
240 {
241 flag = 0F;
242 }
243
244 return flag;
245
246 }
247
248
249
250
251
252
253 /// <summary>
254 /// 转化为金融类型(默认为0)
255 /// </summary>
256 /// <param name="str">代转化的字符串</param>
257 /// <returns></returns>
258 protected decimal ConvertDecimal(string str)
259 {
260 decimal flag = 0;
261 try
262 {
263 flag = Convert.ToDecimal(str);
264 }
265 catch (Exception ex)
266 {
267 flag = 0;
268 }
269 return flag;
270 }
271
272 /// <summary>
273 /// 字符串类型转化成数字(转化失败时默认为0)
274 /// </summary>
275 /// <param name="str">代转化的字符串</param>
276 /// <returns>转化后的数字</returns>
277 protected int ConvertDigit(string str)
278 {
279 int flag = 0;
280 try
281 {
282 flag = Convert.ToInt32(str);
283 }
284 catch (Exception ex)
285 {
286 flag = 0;
287 }
288 return flag;
289 }
290
291 #endregion
292
293
294 protected string BulkCopy(SqlConnection conn, DataTable dt)
295 {
296 string StrAgaionstraccount = "";
297 string CalssID = "";
298 string CategoryID = "";
299 if (dt != null && dt.Rows.Count > 0)
300 {
301 string sqlsnsname = "SELECT *,SNSName FROM BaseSNSInfo WHERE IsValid=1 and classID=1 ORDER BY id DESC";
302 DataTable dtSNS = SqlHelper.GetDataTable(sqlsnsname, conn);
303 string sqllt = "SELECT * FROM BaseSNSClass WHERE IsValid=1 and id=1 or Name LIKE ‘%论坛%‘ ";
304 DataTable dtlt = SqlHelperEx.GetDataTable(sqllt, conn);
305 ///类型和分类
306 string sqlGetCates = "SELECT *,DictID,DictName FROM BaseCategoryName WHERE IsValid=1 AND DictType=‘CategoryID‘";
307 DataTable dtGetCate = SqlHelperEx.GetDataTable(sqlGetCates, conn);
308 for (int k = 0; k < dt.Rows.Count; k++)
309 {
310 CalssID = dt.Rows[k]["classID"].ToString();
311
312 if (dt.Rows.Count > 0)
313 {
314 for (int i = 0; i < dtlt.Rows.Count; i++)
315 {
316 if (dtlt.Rows[i]["Name"].ToString() == CalssID)
317 {
318 CalssID = dtlt.Rows[i]["ID"].ToString();
319 break;
320 }
321 }
322 }
323 CategoryID = dt.Rows[k]["CategoryID"].ToString();
324 if (dtGetCate.Rows.Count > 0)
325 {
326 for (int j = 0; j < dtGetCate.Rows.Count; j++)
327 {
328 if (dtGetCate.Rows[j]["DictName"].ToString() == CategoryID)
329 {
330 CategoryID = dtGetCate.Rows[j]["DictID"].ToString();
331 break;
332 }
333 }
334 }
335
336 string CreateLoginId = Session["UserName"].ToString();
337 string straccount = dt.Rows[k]["SNSName"].ToString();
338 int g = 0;
339 if (dtSNS.Rows.Count > 0)
340 {
341
342 for (; g < dtSNS.Rows.Count; g++)
343 {
344 if (dtSNS.Rows[g]["SNSName"].ToString() == straccount)
345 {
346 StrAgaionstraccount += straccount + ",";
347 break;
348 }
349 }
350 }
351 if (g == dtSNS.Rows.Count)
352 {
353 StringBuilder strSql = new StringBuilder();
354 // 生成SQL语句;
355 strSql.AppendFormat("INSERT INTO BaseSNSInfo(classID,CategoryID,SNSName,accountID,URL,Area,fans,IsTiop,highlight,Stars,media,SNSContact,LinkWay,CreateUserId) values( {0}", Environment.NewLine);
356 strSql.AppendFormat(" @classID,@CategoryID,@SNSName,@accountID,@URL,@Area,@fans,@IsTiop,@highlight,@Stars,@media,@SNSContact,@LinkWay,@CreateUserId) {0}", Environment.NewLine);
357 SqlParameter[] parameters = {
358 new SqlParameter("@classID", CalssID),
359 new SqlParameter("@CategoryID", CategoryID ),
360 new SqlParameter("@SNSName", straccount),
361 new SqlParameter("@accountID", dt.Rows[k]["accountID"].ToString()),
362 new SqlParameter("@URL", dt.Rows[k]["URL"].ToString()),
363 new SqlParameter("@Area", dt.Rows[k]["Area"].ToString()),
364 new SqlParameter("@fans", dt.Rows[k]["fans"].ToString()),
365 new SqlParameter("@IsTiop", dt.Rows[k]["IsTiop"].ToString()),
366 new SqlParameter("@highlight", dt.Rows[k]["highlight"].ToString()),
367 new SqlParameter("@Stars", dt.Rows[k]["Stars"].ToString()),
368 new SqlParameter("@media", dt.Rows[k]["media"].ToString()),
369 new SqlParameter("@SNSContact", dt.Rows[k]["SNSContact"].ToString()),
370 new SqlParameter("@LinkWay", dt.Rows[k]["LinkWay"].ToString()),
371 new SqlParameter("@CreateUserId", CreateLoginId),
372 };
373 // 执行
374 int results = SqlHelperEx.ExecuteNonQuery(strSql.ToString(), conn, parameters);
375 // 返回
376 if (results == 1)
377 {
378 StrAgaionstraccount = "1";
379 }
380 else
381 {
382 StrAgaionstraccount = "0";
383 }
384 }
385 }
386 }
387 return StrAgaionstraccount;
388 }
389 #endregion
时间： 2024-08-06 23:40:20