[英]Reading values from DataTable
I have a DataTable populated with samo data/values and I want to read data from DataTable and pass it to a string variable.我有一个填充了 samo 数据/值的 DataTable,我想从 DataTable 读取数据并将其传递给一个字符串变量。
I have this code:我有这个代码:
DataTable dr_art_line_2 = ds.Tables["QuantityInIssueUnit"];
I have a countert like this:我有一个这样的计数器:
for (int i = 1; i <= broj_ds; i++ )
{
QuantityInIssueUnit_value => VALUE FROM DataTable
QuantityInIssueUnit_uom => VALUE FROM DataTable
}
Is this possible or not?这可能吗? If yes then how to pass data from DataTable to those variables?如果是,那么如何将数据从 DataTable 传递给这些变量?
Thanks!谢谢!
DataTable dr_art_line_2 = ds.Tables["QuantityInIssueUnit"];
for (int i = 0; i < dr_art_line_2.Rows.Count; i++)
{
QuantityInIssueUnit_value = Convert.ToInt32(dr_art_line_2.Rows[i]["columnname"]);
//Similarly for QuantityInIssueUnit_uom.
}
You can do it using the foreach loop您可以使用 foreach 循环来完成
DataTable dr_art_line_2 = ds.Tables["QuantityInIssueUnit"];
foreach(DataRow row in dr_art_line_2.Rows)
{
QuantityInIssueUnit_value = Convert.ToInt32(row["columnname"]);
}
I think it will work我认为它会起作用
for (int i = 1; i <= broj_ds; i++ )
{
QuantityInIssueUnit_value = dr_art_line_2[i]["Column"];
QuantityInIssueUnit_uom = dr_art_line_2[i]["Column"];
}
For VB.Net is对于 VB.Net 是
Dim con As New OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + "database path")
Dim cmd As New OleDb.OleDbCommand
Dim dt As New DataTable
Dim da As New OleDb.OleDbDataAdapter
con.Open()
cmd.Connection = con
cmd.CommandText = sql
da.SelectCommand = cmd
da.Fill(dt)
For i As Integer = 0 To dt.Rows.Count
someVar = dt.Rows(i)("fieldName")
Next
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