public static int GetTableCount(string FilePath)
{
int tablecount = 0;
FileStream stream = File.Open(FilePath, FileMode.Open, FileAccess.Read);
IExcelDataReader excelreader = ExcelReaderFactory.CreateReader(stream);
ExcelSheet = excelreader.AsDataSet(new ExcelDataSetConfiguration()
{
UseColumnDataType = true,
ConfigureDataTable = (tablereader) => new ExcelDataTableConfiguration()
{
EmptyColumnNamePrefix = "Colume",
UseHeaderRow = true,
}
});
DataTableCollection table = ExcelSheet.Tables;
if (table.Contains("Conditional Execute"))
{
tablecount = ExcelSheet.Tables.Count - 2;
}
else if (table.Contains("Keyword Data"))
{
tablecount = ExcelSheet.Tables.Count - 1;
}
else
{
tablecount = ExcelSheet.Tables.Count;
}
excelreader.Close();
return(tablecount);
}
public Boolean Contains(FeatureDataTable item)
{
if (item == null)
{
throw new ArgumentNullException("item");
}
return(_tables.Contains(item.TableName));
}
public void Contains()
{
DataTableCollection tbcol = _dataset[0].Tables;
tbcol.Clear();
/* _tables is array of DataTables defined in Setup */
tbcol.AddRange(_tables);
string tblname = "";
/* checking for a recently input table, expecting true */
Assert.Equal(true, tbcol.Contains(_tables[0].TableName));
/* trying to check with a empty string, expecting false */
Assert.Equal(false, tbcol.Contains(tblname));
/* trying to check for a table that donot exist, expecting false */
Assert.Equal(false, tbcol.Contains("InvalidTableName"));
}
private void CheckDataSource(object source)
{
if (source is IList || source is IListSource || source is IBindingList)
{
//DataTable
this.dataSource = source;
DataTable table = this.dataSource as DataTable;
if (table != null)
{
this.dataMember = table.TableName;
return;
}
//DataSet
DataSet dataSet = this.dataSource as DataSet;
if (dataSet != null)
{
if (dataSet.Tables.Count > 0)
{
DataTable tbl;
if (String.IsNullOrEmpty(this.dataMember))
{
tbl = dataSet.Tables[0];
}
else
{
DataTableCollection tcol = dataSet.Tables;
if (tcol.Contains(this.dataMember))
{
tbl = tcol[this.dataMember];
this.dataSource = tbl;
}
}
}
else
{
throw new MissingDataSourceException();
}
return;
}
//IList
IList list = source as IList;
if (list != null)
{
this.dataSource = list;
this.dataMember = source.ToString();
if (list.Count == 0)
{
throw new MissingDataSourceException();
}
return;
}
}
else
{
throw new MissingDataSourceException();
}
}
private static UnformattedExportSettings GetSettings(DataTableCollection tables)
{
if (!tables.Contains(SettingsTableName))
{
return(null);
}
var settingsDataTable = tables[SettingsTableName];
return(new UnformattedExportSettings(settingsDataTable));
}
public static void AddOrMerge(this DataTableCollection tables, DataTable dt)
{
if (tables.Contains(dt.TableName))
{
tables[dt.TableName].Merge(dt);
}
else
{
tables.Add(dt);
}
}
public IContent WritePage(ISource source, IPageData pageData, OutputData outputData)
{
TkDebug.AssertArgumentNull(outputData, "outputData", this);
PageMakerUtil.AssertType(source, outputData,
SourceOutputType.XmlReader, SourceOutputType.DataSet);
if (outputData.OutputType == SourceOutputType.DataSet)
{
DataSet ds = PageMakerUtil.GetObject <DataSet>(outputData);
DataTableCollection tables = ds.Tables;
foreach (string tableName in fRemoveTables)
{
if (tables.Contains(tableName))
{
tables.Remove(tableName);
}
}
foreach (var mapping in fTableMappings)
{
if (tables.Contains(mapping.Key))
{
DataTable table = tables[mapping.Key];
DataColumnCollection columns = table.Columns;
foreach (string field in mapping.Value)
{
if (columns.Contains(field))
{
columns.Remove(field);
}
}
}
}
}
using (XmlReader reader = PageMakerUtil.GetDataSetReader(outputData))
{
string xml = XmlUtil.GetJson(reader, Result);
return(new SimpleContent(ContentTypeConst.JSON, xml));
}
}
public DataTable CreateVirtualTable(bool useAllFields = false)
{
DataTableCollection tables = HostDataSet.Tables;
if (!tables.Contains(TableName))
{
DataTable table = DataSetUtil.CreateDataTable(TableName, useAllFields ? fScheme.AllFields : fScheme.Fields);
tables.Add(table);
return(table);
}
return(tables[TableName]);
}
private void DoPerTableRow(DataTableCollection tables, string table, Action <DataTable, DataRow> act)
{
if (tables.Contains(table))
{
var dataTable = tables[table];
var rows = dataTable.Rows.Cast <DataRow>().ToList();
foreach (var row in rows)
{
act(dataTable, row);
}
}
}
// <Snippet1>
private void RemoveTables()
{
// Set the name of the table to test for and remove.
string name = "Suppliers";
// Presuming a DataGrid is displaying more than one table, get its DataSet.
DataSet thisDataSet = (DataSet)DataGrid1.DataSource;
DataTableCollection tablesCol = thisDataSet.Tables;
if (tablesCol.Contains(name) && tablesCol.CanRemove(tablesCol[name]))
{
tablesCol.Remove(name);
}
}
/// <summary>
/// Get the specified table if exist. Return null if the table name doesn't exist.
/// </summary>
/// <param name="tables"></param>
/// <param name="tableName">The name of the table.</param>
/// <returns></returns>
public static DataTable GetTable(this DataTableCollection tables, string tableName)
{
if (tables.Contains(tableName))
{
foreach (DataTable t in tables)
{
if (t.TableName == tableName)
{
return(t);
}
}
}
return(null);
}
// <Snippet1>
private void GetIndexes()
{
// Get the DataSet of a DataGrid.
DataSet thisDataSet = (DataSet)DataGrid1.DataSource;
// Get the DataTableCollection through the Tables property.
DataTableCollection tables = thisDataSet.Tables;
// Get the index of the table named "Authors", if it exists.
if (tables.Contains("Authors"))
{
System.Diagnostics.Debug.WriteLine(tables.IndexOf("Authors"));
}
}
// <Snippet1>
private void TestForTableName()
{
// Get the DataSet of a DataGrid.
DataSet thisDataSet = (DataSet)DataGrid1.DataSource;
// Get the DataTableCollection through the Tables property.
DataTableCollection tablesCol = thisDataSet.Tables;
// Check if the named table exists.
if (tablesCol.Contains("Suppliers"))
{
Console.WriteLine("Table named Suppliers exists");
}
}
private void ProcessInstructionsSheet(IXlsxDocumentBuilder document, DataTableCollection tables)
{
if (!tables.Contains(InstructionsTableName))
{
return;
}
var instructionsDataTable = tables[InstructionsTableName];
var instructionsSheetBuilder = new SqadXlsxUnformattedViewInstructionsSheetBuilder();
document.AppendSheet(instructionsSheetBuilder);
AppendColumnsAndRows(instructionsSheetBuilder, instructionsDataTable);
}
private static void AddInfoToDataSet(DataSet data, IUserInfo info, string source,
bool isModule, Guid guid, string tkx, string sessionId)
{
DataTable infoTable = DataSetUtil.CreateDataTable(INFO_TABLE_NAME, INFO_ARRAY);
DataTableCollection tables = data.Tables;
if (!tables.Contains(infoTable.TableName))
{
DataRow row = infoTable.NewRow();
DataSetUtil.SetRowValues(row, INFO_ARRAY, info.UserId, info.MainOrgId,
source, isModule ? 1 : 0, 0, guid, tkx, sessionId);
infoTable.Rows.Add(row);
tables.Add(infoTable);
}
}
private void button1_Click(object sender, EventArgs e)
{
OpenFileDialog openFileDialog1 = new OpenFileDialog();
openFileDialog1.InitialDirectory = "c:\\";
openFileDialog1.Filter = "xml files (*.xml)|*.xml";
openFileDialog1.FilterIndex = 2;
openFileDialog1.RestoreDirectory = true;
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
try
{
Debug.WriteLine(string.Format(
"button1_Click -> file name {0}"
, openFileDialog1.FileName));
string filePath = openFileDialog1.FileName;
DataSet myDataSet = new DataSet();
myDataSet.ReadXml(filePath);
DataTableCollection tables = myDataSet.Tables;
if (tables.Contains("point"))
{
DataTable tb = tables["point"];
this.dgvImportedPoints.Rows.Clear();
int i = 1;
foreach (DataRow dr in tb.Rows)
{
Debug.WriteLine(string.Format(
"button1_Click -> {0} {1} {2}"
, dr[0].ToString(), dr[1].ToString(), dr[2].ToString()));
string[] row1 = new string[] { i.ToString(), dr[0].ToString(), dr[2].ToString(), dr[1].ToString() };
this.dgvImportedPoints.Rows.Add(row1);
i++;
}
}
else
{
MessageBox.Show("选择文件中数据格式有误！");
}
}
catch (Exception ex)
{
MessageBox.Show("读取文件时发生意外错误： " + ex.Message);
}
}
}
private static void AddUrlToDataSet(DataSet data, Uri retUrl, Uri selfUrl, Uri encodeSelfUrl)
{
DataTable urlTable = DataSetUtil.CreateDataTable(URL_TABLE_NAME, URL_ARRAY);
DataTableCollection tables = data.Tables;
if (!tables.Contains(urlTable.TableName))
{
DataRow row = urlTable.NewRow();
string returl = GetUrlValue(retUrl);
string selfurl = GetUrlValue(selfUrl);
string encodeUrl = GetUrlValue(encodeSelfUrl);
DataSetUtil.SetRowValues(row, URL_ARRAY, returl, selfurl,
HttpUtility.UrlEncode(returl, Encoding.UTF8),
HttpUtility.UrlEncode(encodeUrl, Encoding.UTF8));
urlTable.Rows.Add(row);
tables.Add(urlTable);
}
}
private void ProcessDataSheet(IXlsxDocumentBuilder document,
DataTableCollection tables)
{
if (!tables.Contains(_dataTableName))
{
return;
}
var dataTable = tables[_dataTableName];
//note: dirty fix, remove dummy row for JSON deserialization
dataTable.Rows.RemoveAt(0);
var dataSheetBuilder = new SqadXlsxUnformattedViewDataSheetBuilder(_dataTableName);
document.AppendSheet(dataSheetBuilder);
AppendColumnsAndRows(dataSheetBuilder, dataTable);
}
private void toolPart_DropDownItemClicked(object sender, ToolStripItemClickedEventArgs e)
{
string tableName = e.ClickedItem.Text;
if (tableName == "All" || tableName == "Tất cả")
{
grid.DataSource = tablePart;
toolPart.Text = tableName;
if (lang == AvailableLanguage.Vietnamese)
{
grid.Columns[0].HeaderText = "Tùy chọn";
}
}
else
{
if (tables.Contains(tableName))
{
grid.DataSource = tables[tableName];
switch (Language)
{
case AvailableLanguage.Vietnamese:
for (int i = 0; i < grid.Columns.Count; i++)
{
grid.Columns[i].HeaderText = viGridHeader[i];
}
toolPart.Text = "Mục: " + tableName;
break;
case AvailableLanguage.English:
toolPart.Text = "Part: " + tableName;
break;
}
}
else
{
grid.DataMember = "";
}
}
setPermission(tableName);
}
private void pmbtn_Click(object sender, System.EventArgs e)
{
int rowCnt, i;
DataTable bookTable;
DataRow row;
string s1;
if (isoTB.Text.Trim() == "")
{
return;
}
DataTableCollection tablesCol = bookdSet.Tables;
if (tablesCol.Contains("book") && tablesCol.CanRemove(tablesCol["book"]))
{
tablesCol.Remove("book");
}
if (isoTB.Text.Trim() == "0")
{
sqlComm.CommandText = "SELECT book.ID, book.书名, book.文种号, book.图书分类号, book.种次号, borrow.副本, borrow.借出时间, borrow.归还时间, borrow.续借次数, borrow.电话, borrow.Ecode AS ISO编号, borrow.中文姓名 FROM book INNER JOIN borrow ON book.文种号 = borrow.文种号 AND book.种次号 = borrow.种次号 AND book.图书分类号 = borrow.图书分类号 WHERE (borrow.Ecode = '" + isoTB.Text.Trim() + "') AND (borrow.实际归还时间 IS NULL) AND (归还时间<'" + System.DateTime.Now.ToString() + "') AND (borrow.中文姓名 = '" + nmTB.Text.Trim() + "')";
sqlDataAdap.SelectCommand = sqlComm;
sqlDataAdap.Fill(bookdSet, "book");
bookDG.CaptionText = "查询人员：(" + isoTB.Text.Trim().ToUpper() + ")";
dv.Table = bookdSet.Tables["book"];
this.bookDG.DataSource = dv;
return;
}
//sqlhrComm.CommandText="SELECT employees.ecode, employees.ecname, codeorgs.cdptname FROM employees INNER JOIN codeorgs ON employees.dept = codeorgs.dptno WHERE (employees.ecode = '"+isoTB.Text.Trim()+"')";
//sqlhrConn.Open();
//sqldr=sqlhrComm.ExecuteReader();
OracleComm.CommandText = "select v_sys_psn.psncode, v_sys_psn.psnname, v_sys_dept.first_deptname, v_sys_dept.second_deptname, v_sys_dept.third_deptname, v_sys_psn.mobile, v_sys_psn.officephone, v_sys_corp.UNITNAME from v_sys_psn LEFT OUTER JOIN V_SYS_DEPT ON v_sys_psn.pk_deptdoc = v_sys_dept.pk_fourtdept LEFT OUTER JOIN v_sys_corp ON v_sys_psn.PK_CORP=v_sys_corp.PK_CORP where v_sys_psn.psncode=N'" + isoTB.Text.Trim().PadLeft(5, '0') + "' ";//写好想执行的Sql语句
OracleConn.Open();
odr = OracleComm.ExecuteReader();
if (odr.Read())
{
booktv.BeginUpdate();
booktv.Nodes.Clear();
TreeNode rootNode1 = new TreeNode("所借图书", 5, 5);
booktv.Nodes.Add(rootNode1);
TreeNode rootNode = new TreeNode("人员信息");
booktv.Nodes.Add(rootNode);
s1 = odr.GetValue(1).ToString();
TreeNode tnBook1 = new TreeNode("姓名：" + odr.GetValue(1).ToString());
rootNode.Nodes.Add(tnBook1);
TreeNode tnBook2 = new TreeNode("部门：" + odr.GetValue(7).ToString() + "-" + odr.GetValue(2).ToString() + "-" + odr.GetValue(3).ToString() + "-" + odr.GetValue(4).ToString());
rootNode.Nodes.Add(tnBook2);
TreeNode tnBook3 = new TreeNode("电话：" + odr.GetValue(5).ToString() + " " + odr.GetValue(6).ToString());
rootNode.Nodes.Add(tnBook3);
booktv.EndUpdate();
rootNode.Expand();
//sqldr.Close();
//sqlhrConn.Close();
odr.Close();
OracleConn.Close();
sqlComm.CommandText = "SELECT book.ID, book.书名, book.文种号, book.图书分类号, book.种次号, borrow.副本, borrow.借出时间, borrow.归还时间, borrow.续借次数, borrow.电话, borrow.Ecode AS ISO编号 FROM book INNER JOIN borrow ON book.文种号 = borrow.文种号 AND book.种次号 = borrow.种次号 AND book.图书分类号 = borrow.图书分类号 WHERE (borrow.Ecode = '" + isoTB.Text.Trim() + "') AND (borrow.实际归还时间 IS NULL) AND (归还时间<'" + System.DateTime.Now.ToString() + "')";
sqlDataAdap.SelectCommand = sqlComm;
sqlDataAdap.Fill(bookdSet, "book");
bookDG.CaptionText = "查询人员：(" + isoTB.Text.Trim().ToUpper() + ")";
dv.Table = bookdSet.Tables["book"];
this.bookDG.DataSource = dv;
}
else
{
MessageBox.Show("没有该人员！");
odr.Close();
OracleConn.Close();
}
}
public static DataTable GetTable(this DataTableCollection tables, string tblName)
{
return(tables != null && tables.Contains(tblName) ? tables[tblName] : null);
}
/// <summary>
/// Determines whether the <see cref="T:System.Collections.Generic.ICollection`1"/> contains a specific value.
/// </summary>
/// <returns>
/// true if <paramref name="item"/> is found in the <see cref="T:System.Collections.Generic.ICollection`1"/>; otherwise, false.
/// </returns>
/// <param name="item">The object to locate in the <see cref="T:System.Collections.Generic.ICollection`1"/>.</param>
public bool Contains(FeatureDataTable item)
{
return(_dataTables.Contains(item.TableName, item.Namespace));
}
private void maturebtn_Click_1(object sender, System.EventArgs e)
{
int rowCnt, i;
DataTable bookTable;
DataRow row;
string s1;
DataTableCollection tablesCol = bookdSet.Tables;
if (tablesCol.Contains("book") && tablesCol.CanRemove(tablesCol["book"]))
{
tablesCol.Remove("book");
}
booktv.BeginUpdate();
booktv.Nodes.Clear();
booktv.EndUpdate();
sqlComm.CommandText = "SELECT book.ID, book.书名, book.文种号, book.图书分类号, book.种次号,borrow.副本, borrow.借出时间,borrow.归还时间,borrow.续借次数 ,borrow.电话, borrow.Ecode AS ISO编号, borrow.中文姓名 FROM book INNER JOIN borrow ON book.文种号 = borrow.文种号 AND book.种次号 = borrow.种次号 AND book.图书分类号 = borrow.图书分类号 WHERE (borrow.实际归还时间 IS NULL) AND (borrow.归还时间 < '" + System.DateTime.Now.ToString() + "') ORDER BY borrow.借出时间";
sqlDataAdap.SelectCommand = sqlComm;
sqlDataAdap.Fill(bookdSet, "book");
bookDG.CaptionText = "查询所有未还图书";
dv.Table = bookdSet.Tables["book"];
dv.Table.Columns.Add("姓名");
dv.Table.Columns.Add("部门");
for (rowCnt = 0; rowCnt < dv.Table.Rows.Count; rowCnt++)
{
row = dv.Table.Rows[rowCnt];
s1 = row["ISO编号"].ToString().Trim();
if (s1 != "0")
{
//sqlhrComm.CommandText="SELECT employees.ecode, employees.ecname, codeorgs.cdptname FROM employees INNER JOIN codeorgs ON employees.dept = codeorgs.dptno WHERE (employees.ecode = '"+s1+"')";
//sqlhrConn.Open();
//sqldr=sqlhrComm.ExecuteReader();
//sqldr.Read();
//if(sqldr.HasRows)
//{
// row["姓名"]=sqldr.GetValue(1).ToString();
// row["部门"]=sqldr.GetValue(2).ToString();
//}
//sqlhrConn.Close();
//sqldr.Close();
OracleComm.CommandText = "select v_sys_psn.psncode, v_sys_psn.psnname, v_sys_dept.first_deptname, v_sys_dept.second_deptname, v_sys_dept.third_deptname, v_sys_psn.mobile, v_sys_psn.officephone, v_sys_corp.UNITNAME from v_sys_psn LEFT OUTER JOIN V_SYS_DEPT ON v_sys_psn.pk_deptdoc = v_sys_dept.pk_fourtdept LEFT OUTER JOIN v_sys_corp ON v_sys_psn.PK_CORP=v_sys_corp.PK_CORP where v_sys_psn.psncode=N'" + s1.PadLeft(5, '0') + "' ";//写好想执行的Sql语句
OracleConn.Open();
odr = OracleComm.ExecuteReader();
if (odr.HasRows)
{
odr.Read();
row["姓名"] = odr.GetValue(1).ToString();
row["部门"] = odr.GetValue(7).ToString() + "-" + odr.GetValue(2).ToString() + "-" + odr.GetValue(3).ToString() + "-" + odr.GetValue(4).ToString();
}
odr.Close();
OracleConn.Close();
}
}
this.bookDG.DataSource = dv;
}
private void bmbtn_Click(object sender, System.EventArgs e)
{
int rowCnt, i;
DataTable bookTable;
DataRow row;
string s1;
if (wzhTB.Text.Trim() == "" || tsflhTB.Text.Trim() == "" || zchTB.Text.Trim() == "")
{
return;
}
DataTableCollection tablesCol = bookdSet.Tables;
if (tablesCol.Contains("book") && tablesCol.CanRemove(tablesCol["book"]))
{
tablesCol.Remove("book");
}
sqlComm.CommandText = "SELECT ID, 书名, 第一责任者, 出版者, 借出书量, 借出次数, 馆藏量 FROM book WHERE (文种号 = N'" + wzhTB.Text.Trim().ToUpper() + "') AND (图书分类号 = N'" + tsflhTB.Text.Trim().ToUpper() + "') AND (种次号 = N'" + zchTB.Text.Trim().ToUpper() + "')";
sqlConn.Open();
sqldr = sqlComm.ExecuteReader();
if (sqldr.Read())
{
booktv.BeginUpdate();
booktv.Nodes.Clear();
TreeNode rootNode = new TreeNode("图书信息");
booktv.Nodes.Add(rootNode);
TreeNode tnBook1 = new TreeNode("书名：" + sqldr.GetValue(1).ToString());
rootNode.Nodes.Add(tnBook1);
TreeNode tnBook2 = new TreeNode("第一责任者：" + sqldr.GetValue(2).ToString());
rootNode.Nodes.Add(tnBook2);
TreeNode tnBook3 = new TreeNode("出版者：" + sqldr.GetValue(3).ToString());
rootNode.Nodes.Add(tnBook3);
TreeNode tnBook4 = new TreeNode("借出书量：" + sqldr.GetValue(4).ToString() + " 借出次数：" + sqldr.GetValue(5).ToString() + " 馆藏量：" + sqldr.GetValue(6).ToString());
rootNode.Nodes.Add(tnBook4);
booktv.EndUpdate();
rootNode.Expand();
sqldr.Close();
sqlConn.Close();
sqlComm.CommandText = "SELECT 借出时间, 归还时间,续借次数, 电话, Ecode AS ISO编号,副本,中文姓名 FROM borrow WHERE (文种号 = N'" + wzhTB.Text.Trim().ToUpper() + "') AND (图书分类号 = N'" + tsflhTB.Text.Trim().ToUpper() + "') AND (种次号 = N'" + zchTB.Text.Trim().ToUpper() + "') AND (实际归还时间 IS NULL) AND (归还时间<'" + System.DateTime.Now.ToString() + "')";
sqlDataAdap.SelectCommand = sqlComm;
sqlDataAdap.Fill(bookdSet, "book");
bookDG.CaptionText = "查询图书：(" + wzhTB.Text.Trim().ToUpper() + " " + tsflhTB.Text.Trim().ToUpper() + " " + zchTB.Text.Trim().ToUpper() + ")";
dv.Table = bookdSet.Tables["book"];
dv.Table.Columns.Add("姓名");
dv.Table.Columns.Add("部门");
for (rowCnt = 0; rowCnt < dv.Table.Rows.Count; rowCnt++)
{
row = dv.Table.Rows[rowCnt];
s1 = row["ISO编号"].ToString().Trim();
if (s1 != "0")
{
//sqlhrComm.CommandText="SELECT employees.ecode, employees.ecname, codeorgs.cdptname FROM employees INNER JOIN codeorgs ON employees.dept = codeorgs.dptno WHERE (employees.ecode = '"+s1+"')";
//sqlhrConn.Open();
//sqldr=sqlhrComm.ExecuteReader();
//sqldr.Read();
//if(sqldr.HasRows)
//{
// row["姓名"]=sqldr.GetValue(1).ToString();
// row["部门"]=sqldr.GetValue(2).ToString();
//}
//sqlhrConn.Close();
//sqldr.Close();
OracleComm.CommandText = "select v_sys_psn.psncode, v_sys_psn.psnname, v_sys_dept.first_deptname, v_sys_dept.second_deptname, v_sys_dept.third_deptname, v_sys_psn.mobile, v_sys_psn.officephone, v_sys_corp.UNITNAME from v_sys_psn LEFT OUTER JOIN V_SYS_DEPT ON v_sys_psn.pk_deptdoc = v_sys_dept.pk_fourtdept LEFT OUTER JOIN v_sys_corp ON v_sys_psn.PK_CORP=v_sys_corp.PK_CORP where v_sys_psn.psncode=N'" + s1.PadLeft(5, '0') + "' ";//写好想执行的Sql语句
OracleConn.Open();
odr = OracleComm.ExecuteReader();
if (odr.HasRows)
{
odr.Read();
row["姓名"] = odr.GetValue(1).ToString();
row["部门"] = odr.GetValue(7).ToString() + "-" + odr.GetValue(2).ToString() + "-" + odr.GetValue(3).ToString() + "-" + odr.GetValue(4).ToString();
}
odr.Close();
OracleConn.Close();
}
}
this.bookDG.DataSource = dv;
}
else
{
MessageBox.Show("没有该图书！");
sqlConn.Close();
}
}
/// <summary>
/// Search data source meta-data for a target.
/// </summary>
/// <param name="request">Search target.</param>
/// <param name="cancellationToken">Cancellation token.</param>
public virtual Task <string[]> Search(Target request, CancellationToken cancellationToken)
{
string target = request.target == "select metric" ? "" : request.target;
// Attempt to parse an expression that has SQL SELECT syntax
bool parseSelectExpression(string selectExpression, out string tableName, out string[] fieldNames, out string expression, out string sortField, out int topCount)
{
tableName = null;
fieldNames = null;
expression = null;
sortField = null;
topCount = 0;
if (string.IsNullOrWhiteSpace(selectExpression))
{
return(false);
}
// RegEx instance used to parse meta-data for target search queries using a reduced SQL SELECT statement syntax
if (s_selectExpression is null)
{
s_selectExpression = new Regex(@"(SELECT\s+(TOP\s+(?<MaxRows>\d+)\s+)?(\s*(?<FieldName>\w+)(\s*,\s*(?<FieldName>\w+))*)?\s*FROM\s+(?<TableName>\w+)\s+WHERE\s+(?<Expression>.+)\s+ORDER\s+BY\s+(?<SortField>\w+))|(SELECT\s+(TOP\s+(?<MaxRows>\d+)\s+)?(\s*(?<FieldName>\w+)(\s*,\s*(?<FieldName>\w+))*)?\s*FROM\s+(?<TableName>\w+)\s+WHERE\s+(?<Expression>.+))|(SELECT\s+(TOP\s+(?<MaxRows>\d+)\s+)?(\s*(?<FieldName>\w+)(\s*,\s*(?<FieldName>\w+))*)?\s*FROM\s+(?<TableName>\w+))", RegexOptions.Compiled | RegexOptions.IgnoreCase);
}
Match match = s_selectExpression.Match(selectExpression.ReplaceControlCharacters());
if (!match.Success)
{
return(false);
}
tableName = match.Result("${TableName}").Trim();
fieldNames = match.Groups["FieldName"].Captures.Cast <Capture>().Select(capture => capture.Value).ToArray();
expression = match.Result("${Expression}").Trim();
sortField = match.Result("${SortField}").Trim();
string maxRows = match.Result("${MaxRows}").Trim();
if (string.IsNullOrEmpty(maxRows) || !int.TryParse(maxRows, out topCount))
{
topCount = int.MaxValue;
}
return(true);
}
return(Task.Factory.StartNew(() =>
{
return TargetCache <string[]> .GetOrAdd($"search!{target}", () =>
{
if (!(request.target is null))
{
// Attempt to parse search target as a SQL SELECT statement that will operate as a filter for in memory metadata (not a database query)
if (parseSelectExpression(request.target.Trim(), out string tableName, out string[] fieldNames, out string expression, out string sortField, out int takeCount))
{
DataTableCollection tables = Metadata.Tables;
List <string> results = new List <string>();
if (tables.Contains(tableName))
{
DataTable table = tables[tableName];
List <string> validFieldNames = new List <string>();
for (int i = 0; i < fieldNames?.Length; i++)
{
string fieldName = fieldNames[i].Trim();
if (table.Columns.Contains(fieldName))
{
validFieldNames.Add(fieldName);
}
}
fieldNames = validFieldNames.ToArray();
if (fieldNames.Length == 0)
{
fieldNames = table.Columns.Cast <DataColumn>().Select(column => column.ColumnName).ToArray();
}
// If no filter expression or take count was specified, limit search target results - user can
// still request larger results sets by specifying desired TOP count.
if (takeCount == int.MaxValue && string.IsNullOrWhiteSpace(expression))
{
takeCount = MaximumSearchTargetsPerRequest;
}
void executeSelect(IEnumerable <DataRow> queryOperation)
{
results.AddRange(queryOperation.Take(takeCount).Select(row => string.Join(",", fieldNames.Select(fieldName => row[fieldName].ToString()))));
}
if (string.IsNullOrWhiteSpace(expression))
{
if (string.IsNullOrWhiteSpace(sortField))
{
executeSelect(table.Select());
}
else
{
if (Common.IsNumericType(table.Columns[sortField].DataType))
{
decimal parseAsNumeric(DataRow row)
{
decimal.TryParse(row[sortField].ToString(), out decimal result);
return result;
}
executeSelect(table.Select().OrderBy(parseAsNumeric));
}
else
{
executeSelect(table.Select().OrderBy(row => row[sortField].ToString()));
}
}
}
else
{
executeSelect(table.Select(expression, sortField));
}
foreach (DataRow row in table.Select(expression, sortField).Take(takeCount))
{
results.Add(string.Join(",", fieldNames.Select(fieldName => row[fieldName].ToString())));
}
}
return results.ToArray();
}
}
// Non "SELECT" style expressions default to searches on ActiveMeasurements meta-data table
return Metadata.Tables["ActiveMeasurements"].Select($"ID LIKE '{InstanceName}:%' AND PointTag LIKE '%{target}%'").Take(MaximumSearchTargetsPerRequest).Select(row => $"{row["PointTag"]}").ToArray();
});
}, cancellationToken));
