【发布时间】：2012-08-20 17:20:18
【问题描述】：
我有一个网格视图，它显示在线订单的一些基本信息（零件、数量、发货地址、请求日期和发货方式）。当我在网格视图中选择“编辑”或“删除”链接时，出于某种原因，它不会让我做任何一个。这是我所拥有的：
protected void Page_Load(object sender, EventArgs e)
{
table = new DataTable("myTable");
DataColumn column1 = new DataColumn();
column1.DataType = typeof(string);
column1.ColumnName = "Part";
DataColumn column2 = new DataColumn();
column2.DataType = typeof(Int32);
column2.ColumnName = "Quantity";
DataColumn column3 = new DataColumn();
column3.DataType = typeof(string);
column3.ColumnName = "Ship-To";
DataColumn column4 = new DataColumn();
column4.DataType = typeof(string);
column4.ColumnName = "Requested Date";
DataColumn column5 = new DataColumn();
column5.DataType = typeof(string);
column5.ColumnName = "Shipping Method";
table.Columns.Add(column1);
table.Columns.Add(column2);
table.Columns.Add(column3);
table.Columns.Add(column4);
table.Columns.Add(column5);
}
protected void addbtn_Click(object sender, EventArgs e)
{
//assign all variables in form
part = parttxtbox.Text.ToUpper();
shipto = shiptotxtbox.Text;
reqdate = reqdatecal.SelectedDate.ToShortDateString();
shipmthd = shipddl.SelectedItem.ToString();
//validate to make sure all fields are in correct format and acceptable for processing
if ((importlstbx.Items.Contains(item)) && (qtychk == 1) && (shipto.ToString() != "") &&
(Convert.ToDateTime(reqdate) >= DateTime.Today) && (shipmthd != "-- Select --"))
{
validatelbl.Visible = false;
Session["Part"] += part + "|";
Session["Quantity"] += qty + "|";
Session["Ship-To"] += shipto + "|";
Session["Requested Date"] += reqdate + "|";
Session["Shipping Method"] += shipddl.SelectedItem.ToString() + "|";
CreateTable();
//Clear All Data on Postback
ClearTextBoxes(Page);
//ClearDDLBoxes(Page);
SetFocus(parttxtbox);
}
orderbtn.Visible = true;
}
public void CreateTable()
{
string[] spart = Session["Part"].ToString().Split('|');
string[] sqty = Session["Quantity"].ToString().Split('|');
string[] sship = Session["Ship-To"].ToString().Split('|');
string[] sdate = Session["Requested Date"].ToString().Split('|');
string[] smethod = Session["Shipping Method"].ToString().Split('|');
int recordnum = spart.Length;
for (int i = 0; i < recordnum - 1; i++)
{
DataRow row = table.NewRow();
row["Part"] = spart[i].ToString();
row["Quantity"] = sqty[i].ToString();
row["Ship-To"] = sship[i].ToString();
row["Requested Date"] = sdate[i].ToString();
row["Shipping Method"] = smethod[i].ToString();
table.Rows.Add(row);
}
griditems.DataSource = table.DefaultView;
griditems.DataBind();
}
private void BindData()
{
griditems.DataSource = table;
griditems.DataBind();
}
protected void griditems_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
griditems.PageIndex = e.NewPageIndex;
BindData();
}
protected void griditems_RowEditing(object sender, GridViewEditEventArgs e)
{
//Set the edit index.
griditems.EditIndex = e.NewEditIndex;
//Bind data to the GridView control.
BindData();
}
protected void griditems_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
//Reset the edit index.
griditems.EditIndex = -1;
//Bind data to the GridView control.
BindData();
}
protected void griditems_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
//Retrieve the table from the session object.
DataTable dt = table;
//Update the values.
GridViewRow row = griditems.Rows[e.RowIndex];
dt.Rows[row.DataItemIndex]["Part"] = ((TextBox)(row.Cells[1].Controls[0])).Text;
dt.Rows[row.DataItemIndex]["Quantity"] = ((TextBox)(row.Cells[2].Controls[0])).Text;
dt.Rows[row.DataItemIndex]["Ship-To"] = ((TextBox)(row.Cells[3].Controls[0])).Text;
dt.Rows[row.DataItemIndex]["Requested Date"] = ((TextBox)(row.Cells[4].Controls[0])).Text;
dt.Rows[row.DataItemIndex]["Shipping Method"] = ((DropDownList)(row.Cells[5].Controls[0])).SelectedItem;
//Reset the edit index.
griditems.EditIndex = -1;
//Bind data to the GridView control.
BindData();
}
protected void griditems_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
//int id = Convert.ToInt32(griditems.DataKeys[e.RowIndex].Values[0].ToString());
//griditems.DeleteRow(id);
//BindData();
//string item = griditems.DataKeys[e.RowIndex].Value.ToString();
//griditems.DeleteRow(Convert.ToInt32(item));
//BindData();
//TextBox FileContentsTextBox = parttxtbox.FindControl("part") as TextBox;
//FileContentsTextBox.Text = string.Format("You have opted to delete {0}.", item);
//File.Delete(item);
//////((DataTable)ViewState["Data"]).Rows.RemoveAt(e.RowIndex);
//((DataTable)table).Rows.RemoveAt(e.RowIndex);
//BindData();
////griditems.DataSource = ((DataTable)table);
////griditems.DataBind();
}
}
我尝试了很多东西，这就是为什么这么多被注释掉的原因。不用说，它没有用。
【问题讨论】：
-
点击其中一个链接会发生什么？
-
当我点击编辑时，gridview 会消失，直到我再次填写表单，然后它会显示编辑详细信息以进行编辑，但是当我点击更新时会崩溃。当我点击删除链接时，它似乎只是回发而不是其他任何事情（这很有意义，因为所有内容都被注释掉了，但后来我取消了上面前 3 行的注释： int id = Convert.ToInt32(griditems.DataKeys[e .RowIndex].Values[0].ToString()); griditems.DeleteRow(id); BindData(); 我得到指向第一行的索引超出范围错误