Well, I've never needed to delete rows from a datatable after selecting them into it, but there might be a reason why he would want to do it that way. If so, you just iterate through the rows in the datatable and delete them based on values in the columns. It would look someti...
1,使用DataTable.Rows.Remove(DataRow),或者DataTable.Rows.RemoveAt(index);可以直接删除行 2,datatable.Rows[i].Delete()。Delete()之后需要datatable.AccepteChanges()方法确认完全删除,因为Delete()只是将相应列的状态标志为删除,还可以通过datatable.RejectChanges()回滚,使该行取消删除。 只是delete掉的效果如下...
1,使用DataTable.Rows.Remove(DataRow),或者DataTable.Rows.RemoveAt(index);可以直接删除行 2,datatable.Rows[i].Delete()。Delete()之后需要datatable.AccepteChanges()方法确认完全删除,因为Delete()只是将相应列的状态标志为删除,还可以通过datatable.RejectChanges()回滚,使该行取消删除。 只是delete掉的效果如下...
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//remove是 真的从datatable中删除 比如：ds.Tables[0].Rows[i].Delete();ds.Tables[0].Rows.RemoveAt(i);两者是有区别的.1. 使用myDataTable.Rows.RemoveAt(i)删除行.2. 使用myDataTable.Rows(i).delete 这时候需要使用 myDataTable.AcceptChanges 才能更新到数据库.两种方法看似第一种比较...
datatable删除行之datatable.Rows[i].Delete()。标记之后行没有了 使用Delete()之后行消失了 先在for循环外加上dt.AcceptChanges(); 删除时在dt.AcceptChanges();
使用 Delete 方法刪除數 DataRow 個專案之後,叫用 會取消 RejectChanges 刪除其中一個資料列。 C# 複製 private void DemonstrateDeleteRow() { // Create a simple DataTable with two columns and ten rows. DataTable table = new DataTable("table"); DataColumn idColumn = new DataColumn("id", Type....
string sql = "select * from [sheet1$A:B]"; int kk = 0; try { myConn.Open(); OleDbDataAdapter oda = new OleDbDataAdapter(sql, myConn); oda.Fill(ds, "[Sheet1$]"); myConn.Close(); dt1 = ds.Tables[0]; for (int i = 0; i < dt1.Rows.Count; i++) { DataRow dr = dt...
DataTable::Delete RowGroupCollection::Delete RowGroup::Delete VersionDeleteState::Delete VersionDeleteState::Flush VersionDeleteState::Flush RowGroup::DeleteRows RowGroup::GetOrCreateVersionInfo RowVersionManager::GetVectorInfo RowVersionManager::Deserialize ...
deleteColumn --column(String) [--getbyindex(Boolean)] --dataTable(DataTable) Inputs ScriptDesignerRequiredAcceptedTypesDescription --columnColumnRequiredTextName or index of the column to exclude from the data table. --getbyindexUse IndexOptionalBooleanWhen enabled, allows the column to be deleted...