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下面的代碼顯示驗證消息「文件已經在列表中」,如果該文件已經存在,但它不會阻止它添加到gridview。將能夠建議什麼是錯的。謝謝防止GridView添加重複條目
if (GridFiles.Rows.Count > 0)
{
int count = GridFiles.Rows.Count;
dt = new DataTable();
DataColumn dcFileName = new DataColumn("File Name", typeof(string));
dt.Columns.Add(dcFileName);
for (int j = 0; j < count; j++)
{
if (GridFiles.Rows[j].Cells[1].Text == FileName)
{
lblMessage.Text = "File already in the list";
break;
}
}
for (int k = 0; k < count; k++)
{
dr = dt.NewRow();
dr["File Name"] = GridFiles.Rows[k].Cells[1].Text;
dt.Rows.Add(dr);
}
dr = dt.NewRow();
dr["File Name"] = FileName;
dt.Rows.Add(dr);
GridFiles.DataSource = dt;
ViewState["grdContent"] = dt; //stored datable in viewstate
GridFiles.DataBind();
}
else
{
dt = new DataTable();
DataColumn dcFileName = new DataColumn("File Name", typeof(string));
dt.Columns.Add(dcFileName);
dr = dt.NewRow();
dr["File Name"] = FileName;
dt.Rows.Add(dr);
GridFiles.DataSource = dt;
ViewState["grdContent"] = dt; //stored datable in viewstate
GridFiles.DataBind();
}
顯示_what_錯誤信息?你的意思是在某個地方拋出異常嗎?哪部分代碼導致錯誤/異常? –
嗨格蘭特,我已更新帖子。我的意思是驗證消息不是例外。謝謝 – Supermode
Gridviews真的只顯示數據,如果你在下拉數據表上設置主鍵,那麼問題應該被解決。 – Bit