Gridview绑定到数据表编辑下拉列表C＃
我有一个绑定到DataTable的GridView，当你选择编辑时，我可以获得要更改的值。但是，一个字段需要是下拉列表而不是文本框。这是我到目前为止的代码。
protected void griditems_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
DataTable dt = (DataTable)Session["table"];
//Update the values.
GridViewRow row = griditems.Rows[e.RowIndex];
dt.Rows[row.DataItemIndex]["Part"] = ((TextBox)(row.Cells[1].Controls[0])).Text.ToUpper();
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.ToUpper();
dt.Rows[row.DataItemIndex]["Requested Date"] = ((TextBox)(row.Cells[4].Controls[0])).Text;
//dt.Rows[row.DataItemIndex]["Shipping Method"] = ((TextBox)(row.Cells[5].Controls[0])).Text;
DropDownList cmbType = (DropDownList)griditems.Rows[e.RowIndex].FindControl("Shipping Method");
griditems.EditIndex = -1;
BindData();
}
}
当我将发货方式的行取消注释为文本框时，它就像它所说的那样，一个文本框，而不是一个下拉列表。我已经尝试将它更改为DropDownList而没有运气。
在aspx文件中：
<asp:GridView ID="griditems" runat="server"
onrowdeleting="griditems_RowDeleting" onrowediting="griditems_RowEditing"
onrowupdating="griditems_RowUpdating" AllowPaging="True" onpageindexchanging="griditems_PageIndexChanging"
onrowcancelingedit="griditems_RowCancelingEdit" ViewStateMode="Enabled" Caption="Order Details"
AutoGenerateDeleteButton="True" AutoGenerateEditButton="True"
onrowdatabound="griditems_RowDataBound" >
<EditRowStyle BackColor="#FF9900" BorderStyle="Double" /></asp:GridView>
并在生成表时：
public void CreateTable()
{
DataTable table = new DataTable();
if (Session["table"] != null)
table = (DataTable)Session["table"];
else
{
table.Columns.Add("Part", typeof(string));
table.Columns.Add("Quantity", typeof(Int32));
table.Columns.Add("Ship-To", typeof(string));
table.Columns.Add("Requested Date", typeof(string));
table.Columns.Add("Shipping Method", typeof(string));
}
DataRow row = table.NewRow();
row["Part"] = part;
row["Quantity"] = qty;
row["Ship-To"] = shipto;
row["Requested Date"] = reqdate;
row["Shipping Method"] = shipmthd;
table.Rows.Add(row);
Session["table"] = table;
griditems.DataSource = table.DefaultView;
griditems.DataBind();
}
2 个答案:
答案 0 :(得分：1)
尝试dis：
Default.aspx： （最佳做法是在GridView中使用模板字段）
<asp:GridView ID="gvshipping" runat="server" AutoGenerateColumns="False"
onrowcancelingedit="gvshipping_RowCancelingEdit"
onrowdatabound="gvshipping_RowDataBound"
onrowediting="gvshipping_RowEditing" CellPadding="4" ForeColor="#333333"
GridLines="None">
<AlternatingRowStyle BackColor="White" />
<Columns>
<asp:TemplateField HeaderText="Part">
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Bind("part") %>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="TextBox1" Text='<%# Bind("part") %>' runat="server"></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Quatity">
<ItemTemplate>
<asp:Label ID="lblqty" runat="server" Text='<%# Bind("quantity") %>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtqty" runat="server" Text='<%# Bind("quantity") %>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Ship to">
<ItemTemplate>
<asp:Label ID="lblshipto" runat="server" Text='<%# Bind("ShipTo") %>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtshipto" runat="server" Text='<%# Bind("ShipTo") %>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Post date">
<ItemTemplate>
<asp:Label ID="lblpostdate" runat="server" Text='<%# Bind("RequestedDate")%>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtpostdate" Text='<%# Bind("RequestedDate")%>' runat="server"></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Shipping Method">
<ItemTemplate>
<asp:Label ID="lblshipmethod" runat="server" Text='<%# Bind("ShippingMethod")%>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:DropDownList ID="DropDownList1" runat="server">
</asp:DropDownList>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField ShowHeader="False">
<ItemTemplate>
<asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="False"
CommandName="Edit" Text="Edit"></asp:LinkButton>
</ItemTemplate>
<EditItemTemplate>
<asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="True"
CommandName="Update" Text="Update"></asp:LinkButton>
<asp:LinkButton ID="LinkButton2" runat="server" CausesValidation="False"
CommandName="Cancel" Text="Cancel"></asp:LinkButton>
</EditItemTemplate>
</asp:TemplateField>
</Columns>
<EditRowStyle BackColor="#7C6F57" />
<FooterStyle BackColor="#1C5E55" Font-Bold="True" ForeColor="White" />
<HeaderStyle BackColor="#1C5E55" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#666666" ForeColor="White" HorizontalAlign="Center" />
<RowStyle BackColor="#E3EAEB" />
<SelectedRowStyle BackColor="#C5BBAF" Font-Bold="True" ForeColor="#333333" />
<SortedAscendingCellStyle BackColor="#F8FAFA" />
<SortedAscendingHeaderStyle BackColor="#246B61" />
<SortedDescendingCellStyle BackColor="#D4DFE1" />
<SortedDescendingHeaderStyle BackColor="#15524A" />
</asp:GridView>
代码背后：
protected void Page_Load(object sender, EventArgs e)
{
if(!Page.IsPostBack)
{
gvBind();
}
}
public void gvBind()
{
DataTable dt = createTable();
Session["tb"] = dt;
gvshipping.DataSource = Session["tb"];
gvshipping.DataBind();
}
protected void gvshipping_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
if ((e.Row.RowState & DataControlRowState.Edit) > 0)
{
DropDownList dpshipmethod = (DropDownList)e.Row.FindControl("DropDownList1");
//bind dropdownlist
DataTable dt = shipingmethodTable();
dpshipmethod.DataSource = dt;
dpshipmethod.DataTextField = "ShippingMethod";
dpshipmethod.DataValueField = "Id";
dpshipmethod.DataBind();
DataRowView dr = e.Row.DataItem as DataRowView;
dpshipmethod.SelectedItem.Text = dr["ShippingMethod"].ToString();
}
}
}
protected void gvshipping_RowEditing(object sender, GridViewEditEventArgs e)
{
gvshipping.EditIndex = e.NewEditIndex;
vBind();
}
protected void gvshipping_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
gvshipping.EditIndex = -1;
gvBind();
}
public DataTable createTable()
{
DataTable dt = new DataTable();
dt.Columns.Add("Part", typeof(string));
dt.Columns.Add("Quantity", typeof(Int32));
dt.Columns.Add("ShipTo", typeof(string));
dt.Columns.Add("RequestedDate", typeof(string));
dt.Columns.Add("ShippingMethod", typeof(string));
string date= DateTime.Now.ToShortDateString();
DataRow row = dt.NewRow();
row["Part"] = "Anchor";
row["Quantity"] = "10";
row["ShipTo"] = "blah";
row["RequestedDate"] = date;
row["ShippingMethod"] = "Charge by subtotal";
dt.Rows.Add(row);
DataRow row1 = dt.NewRow();
row1["Part"] = "blade";
row1["Quantity"] = "88";
row1["ShipTo"] = "blah";
row1["RequestedDate"] = date;
row1["ShippingMethod"] = "Charge by quantity";
dt.Rows.Add(row1);
DataRow row2 = dt.NewRow();
row2["Part"] = "cabin";
row2["Quantity"] = "4";
row2["ShipTo"] = "blah";
row2["RequestedDate"] = date;
row2["ShippingMethod"] = "Charge by subtotal";
dt.Rows.Add(row2);
DataRow row3 = dt.NewRow();
row3["Part"] = "cockpit";
row3["Quantity"] = "11";
row3["ShipTo"] = "blah";
row3["RequestedDate"] = date;
row3["ShippingMethod"] = "Charge by weight";
dt.Rows.Add(row3);
DataRow row4 = dt.NewRow();
row4["Part"] = "jack";
row4["Quantity"] = "45";
row4["ShipTo"] = "blah";
row4["RequestedDate"] = date;
row4["ShippingMethod"] = "Charge by weight";
dt.Rows.Add(row4);
DataRow row5 = dt.NewRow();
row5["Part"] = "cabin";
row5["Quantity"] = "67";
row5["ShipTo"] = "blah";
row5["RequestedDate"] = date;
row5["ShippingMethod"] = "Charge by weight";
dt.Rows.Add(row5);
DataRow row6 = dt.NewRow();
row6["Part"] = "blade";
row6["Quantity"] = "4";
row6["ShipTo"] = "blah";
row6["RequestedDate"] = date;
row6["ShippingMethod"] = "Charge by weight";
dt.Rows.Add(row6);
return dt;
}
public DataTable shipingmethodTable()
{
DataTable dtshipingmethod = new DataTable();
dtshipingmethod.Columns.Add("Id", typeof(Int32));
dtshipingmethod.Columns.Add("ShippingMethod", typeof(string));
DataRow row = dtshipingmethod.NewRow();
row["Id"] = 1;
row["ShippingMethod"] = "Charge by subtotal";
dtshipingmethod.Rows.Add(row);
DataRow row1 = dtshipingmethod.NewRow();
row1["Id"] = 2;
row1["ShippingMethod"] = "Charge by weight";
dtshipingmethod.Rows.Add(row1);
DataRow row2 = dtshipingmethod.NewRow();
row2["Id"] = 3;
row2["ShippingMethod"] = "Charge by quantity";
dtshipingmethod.Rows.Add(row2);
return dtshipingmethod;
}
<强>截图：
答案 1 :(得分：0)
你可以在这方面的帮助下继续：
dt.Rows[row.DataItemIndex]["Shipping Method"] = ((DropDownList)row.FindControl("DropdownList1")).SelectedItem;
修改
dt.Rows[row.DataItemIndex]["Shipping Method"] = ((DropDownList)
(row.Cells[5].Controls[0])).SelectedItem.ToString();
相关问题
最新问题
- 我写了这段代码，但我无法理解我的错误
- 我无法从一个代码实例的列表中删除 None 值，但我可以在另一个实例中。为什么它适用于一个细分市场而不适用于另一个细分市场？
- 是否有可能使 loadstring 不可能等于打印？卢阿
- java中的random.expovariate()
- Appscript 通过会议在 Google 日历中发送电子邮件和创建活动
- 为什么我的 Onclick 箭头功能在 React 中不起作用？
- 在此代码中是否有使用“this”的替代方法？
- 在 SQL Server 和 PostgreSQL 上查询，我如何从第一个表获得第二个表的可视化
- 每千个数字得到
- 更新了城市边界 KML 文件的来源？