我想使用LINQ條件多值數組字符串是split(',')
我列出數據文件夾中的數據文件。 (未在數據庫中)LINQ:我怎麼可以用戶條件多值數組字符串?
碼C#
public List<sFile> GettingFiles(string path)
{
//Read File in folder
List<sFile> allfile = new List<sFile>();
DirectoryInfo di = new DirectoryInfo(path);
FileInfo[] fileinfo = di.GetFiles("*.*");
foreach (FileInfo item in fileinfo)
{
allfile.Add(new sFile
{
FileName = item.Name,
Seq = int.Parse(item.Name.Substring(12, item.Name.Length - 12)),
PmnCode = item.Name.Substring(7, item.Name.Length - 12),
Path = item.DirectoryName,
Size = formatSize(item.Length),
SizeInt = int.Parse(item.Length.ToString())
});
}
return allfile;
}
public void btnQuery_Click(object sender, EventArgs e)
{
List<sFile> allFiles = GettingFiles(path); //List file in Folder
string pmnCode = txtPMNCode.Text.ToString(); //AAAA, BBBBB, CCCCC, DDDDD
string[] subPmnCode = pmnCode.Split(',');
string totalPmnCode = string.Empty;
foreach (string item2 in subPmnCode)
{
var queryData = from d in allFiles.AsQueryable()
where (d.PmnCode.Contains(item2))
select d;
//Add Column
DataTable dt = new DataTable();
dt.Columns.Add(enmField.NAME.ToString());
dt.Columns.Add(enmField.SIZE.ToString());
dt.Columns.Add(enmField.MODIFY_DATE.ToString());
dt.Columns.Add(enmField.PATH.ToString());
DataRow myRow = dt.NewRow();
foreach (sFile item in queryData.ToList())
{
myRow = dt.NewRow();
myRow[enmField.NAME.ToString()] = item.FileName.Trim();
myRow[enmField.SIZE.ToString()] = item.Size.Trim();
myRow[enmField.MODIFY_DATE.ToString()] = item.Date;
myRow[enmField.PATH.ToString()] = item.Path.Trim() + "\\" + item.FileName.Trim();
dt.Rows.Add(myRow);
}
gvDetail.DataSource = dt;
gvDetail.DataBind();
}
}
示例數據
Pmn Code
AAAAA
BBBBB
CCCCC
DDDDD
我想查詢wheer通過pmn_code條件是AAAAA,BBBBB,DDDDD 我想顯示數據
var queryData = from d in allFiles.AsQueryable()
where (d.PmnCode.Contains("AAAAA") &&
d.PmnCode.Contains("BBBBB") &&
d.PmnCode.Contains("DDDDD")
)
select d;
但我無法通過結果查詢數組字符串。 我如何使用數組linq?
請幫幫我。由於提前;)
您可以顯示錶格的結構嗎? –
到目前爲止,你的查詢返回的文件必須有這樣的名字:'AAAAA_BBBBB_DDDD'你的意思是'||'? –