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當我從我的DataGridView
中刪除一行時,我的數據庫沒有更新。 假設我按Delete
鍵刪除DataGridView
上的選定行,然後對其他行進行其他更改。保存更改爲db
最後,我會按Save
按鈕保存所有這些變化
這裏是我的代碼:
private bool SaveData(DataGridView dgv)
{
bool bDone = true;
DataTable dtVesselDataChanges;
SQLiteCommand DeleteCmd = new SQLiteCommand();
string sdeleteVesselCase = " public string SQL_DeleteVesselDataCase = "delete from vesseldata where plantid = @plantid and [email protected] and [email protected]";"
DeleteCmd.CommandText = sdeleteVesselCase;
dtVesselDataChanges = gdt.GetChanges();
if (dtVesselDataChanges.Rows.Count > 0 && dtVesselDataChanges != null)
{
for (int i = 0; i < dtVesselDataChanges.Rows.Count; i++)
{
if (dtVesselDataChanges.Rows[i].RowState == DataRowState.Deleted)
{
int rowindexPlant = Convert.ToInt32(gdt.Rows[i]["PlantId", DataRowVersion.Original]);
int rowindexFile = Convert.ToInt32(gdt.Rows[i]["FileId", DataRowVersion.Original]);
int rowindexVDID = Convert.ToInt32(gdt.Rows[i]["VDID", DataRowVersion.Original]);
DeleteCmd.Parameters.AddWithValue("@plantid", rowindexPlant);
DeleteCmd.Parameters.AddWithValue("@fileid", rowindexFile);
DeleteCmd.Parameters.AddWithValue("@VDID", rowindexVDID);
_DatabaseConnection.ExecuteQuery(DeleteCmd); ;
}
}
}
There is no error except DB is not updated
甚至調用這個函數嗎?我認爲沒有別的辦法,除了調試,看看它如何與功能。 –
你發佈的代碼甚至沒有編譯。請參閱'string sdeleteVesselCase =「公共字符串SQL_DeleteVesselDataCase = ...'。 –
@ Thorsten Dittmar:對不起,我不認爲你會嘗試編譯代碼。 – user575219