问题描述
限时送ChatGPT账号..我正在尝试从 GridView 获取 int 值.这是我的 gridview 的屏幕截图.
I'm trying to get an int value from a GridView. Here is the screenshot of my gridview.
这里是Gridview的asp代码
Here is the asp code for the Gridview
我创建了一个 RowCommand 方法,当我按下 GridView 上的删除按钮时,它应该给我第二列的 int 值.例如,如果我按下最后一个删除按钮,它会给我一个 int 值 5.
I have created a RowCommand method where when I press the Remove button on the GridView it is suppose to give me the int value of the 2nd column. So for example if I was to press the last Remove button it would give me an int value of 5.
这是我的方法的代码隐藏
This is my codebehind for the method
protected void grdOrder_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName == "Remove")
{
int bigStore = Convert.ToInt32(grdOrder.SelectedRow.Cells[2].Text);
clsStockCollection AnId = new clsStockCollection();
clsStock TheOrder = new clsStock();
TheOrder.OrderId = bigStore;
AnId.DeleteOrder(TheOrder);
DataCall();
}
}
当我运行此代码时,出现此错误.未将对象引用设置为对象的实例.
When I run this code I get this error. Object reference not set to an instance of an object.
我不明白我如何或为什么需要引用一个对象,例如:Object As New Object.为什么我需要这样做?
I don't understand how or why I need to reference an object for example : Object As New Object. Why do I need to do this?
这是完整课程的代码隐藏:pastebin/yzLR7s2w
Here is the codebehind for the full class : pastebin/yzLR7s2w
提前致谢
推荐答案
SelectedRows
只返回被选中的行;没有选择,您将一无所获.而不是 int bigStore = Convert.ToInt32(grdOrder.SelectedRow.Cells[2].Text);
试试:
SelectedRows
only returns rows that have been selected; without a selection you won't get anything. Instead of int bigStore = Convert.ToInt32(grdOrder.SelectedRow.Cells[2].Text);
try:
int rowIndex = Convert.ToInt32(e.CommandArgument); // Get the current row
int bigStore = Convert.ToInt32(grdOrder.Rows[rowIndex].Cells[2].Text);
这篇关于从 Gridview 单元格获取值的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
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