位置0处没有行错误 [英] There is no row at position 0 error

问题描述

大家好，您能帮我解决有关上述主题的问题吗?

这是我的代码:

Hello guys, can you help me with my problem regarding about the said subject.

Here''s my code:

Protected Sub GridView3_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles GridView3.Selected IndexChanged

MultiView.SetActiveView(ViewCheckout)

Dim NewOrder3 As New DataSet1TableAdapters.basket3TableAdapter
Dim order3 As DataSet1.basket3DataTable

order3=NewOrder3.GetDataByOrderBasket3(GridView3.SelectedValue.ToString())
GridView3.DataBind()

LabelProductIDviewcheckout.Text = order3.Rows(0)("ProductID")
LabelProductNameviewcheckout.Text = order3.Rows(0)("ProductName")
LabelProductQuantityviewcheckout.Text = order3.Rows(0)("ProductQuantity")
LabelProductPriceviewcheckout.Text = order3.Rows(0)("ProductPrice")

谢谢！

Thanks!

推荐答案

在Visual Studio中，在该行处设置一个断点

In visual studio put a break point at the line

LabelProductIDviewcheckout.Text = order3.Rows(0)("ProductID")

并使用data visualizer检查order3 DataTable 中是否有任何行，因为位置0处没有行错误" 的原因是表中没有行.为避免该错误，请更好地检查order3 DataTable中的Rows 数量，如下所示

and check whether there are any rows in the order3 DataTable using the data visualizer, because the reason for "There is no row at position 0 error" is that there are no rows in the table. To avoid that error better check for the number of Rows in the order3 DataTable as below

If order3.Rows.Count > 0 Then
    LabelProductIDviewcheckout.Text = order3.Rows(0)("ProductID")
    LabelProductNameviewcheckout.Text = order3.Rows(0)("ProductName")
    LabelProductQuantityviewcheckout.Text = order3.Rows(0)("ProductQuantity")
    LabelProductPriceviewcheckout.Text = order3.Rows(0)("ProductPrice")
End If 

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