GridView行未更新,GridView编辑模板中文本框中的文本未出现
本文关键字:文本 GridView 更新 编辑 中文 | 更新日期: 2023-09-27 18:07:59
我有网格视图,我想更新行,但它没有发生。数据源是一个DataTable。请帮助。
下面是标记
<asp:GridView ID="GrdV" runat="server" AutoGenerateColumns="false"
OnRowEditing="GrdV_RowEditing" OnRowUpdating="GrdV_RowUpdating">
<Columns>
<asp:TemplateField HeaderText="Clip Description">
<ItemTemplate>
<asp:Label ID="lblDescrptn" runat="server" Text='<%# Bind("Description") %>'>
</asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="descTbx" runat="server" Text='<%# Bind("Description") %>'>
</asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:CommandField ShowEditButton="True" />
</Columns>
这是
后面的代码 protected void GrdV_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
// Retrieve the row being edited.
int index = GrdV.EditIndex;
GridViewRow row = GrdV.Rows[index];
TextBox t1 = row.FindControl("descTbx") as TextBox;
DataTable dt = (DataTable)Session["tmdataTable"];
dt.Rows[index]["Description"] = t1.Text; //Description is a column of my DataTable
dt.AcceptChanges();
GrdV.EditIndex = -1;
GrdV.DataSource = dt;
GrdV.DataBind();
}
在调试中,我发现文本框正在传递空字符串t1.Text =""
,即使我已经用新值填充了文本框。我认为错误在
TextBox t1 = row.FindControl("descTbx") as TextBox;
新代码 protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
GrdV.DataSource = Session["tmdataTable"];
GrdV.DataBind();
}
DataTable Finaldt = getTable();
GrdV.DataSource = Finaldt;
GrdV.DataBind();
Session["tmdataTable"] = Finaldt;
}
EditIndex
不可用,您需要GridViewUpdateEventArgs
的e.RowIndex
// Retrieve the row being edited.
DataTable dt = (DataTable)Session["tmdataTable"];
GridViewRow row = GrdV.Rows[e.RowIndex];
TextBox t1 = row.FindControl("descTbx") as TextBox;
dt.Rows[row.DataItemIndex]["Description"] = t1.Text; //Description is a column of my DataTable
dt.AcceptChanges();
GrdV.EditIndex = -1;
GrdV.DataSource = dt;
GrdV.DataBind();
稍微修改一下代码并检查一下。将EditIndex
更改为e.RowIndex
protected void GrdV_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
GridViewRow row = GrdV.Rows[e.RowIndex]; // this line is changed
TextBox t1 = row.FindControl("descTbx") as TextBox;
DataTable dt = (DataTable)Session["tmdataTable"];
dt.Rows[row.DataItemIndex]["Description"] = t1.Text; //Description is a column of my DataTable
dt.AcceptChanges();
GrdV.EditIndex = -1;
GrdV.DataSource = dt;
GrdV.DataBind();
}
你这样做了吗?
protected void Page_Load(object sender, EventArgs e)
{
if(!IsPostBack)
{
GrdV.DataSource = Session["tmdataTable"];
GrdV.DataBind();
}
}
protected void GrdV_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
if (e.Item is GridDataItem)
{
// Retrieve the row being edited.
int index = GrdV.EditIndex;
GridViewRow row = GrdV.Rows[index];
TextBox t1 = row.FindControl("descTbx") as TextBox;
DataTable dt = (DataTable)Session["tmdataTable"];
dt.Rows[index]["Description"] = t1.Text; //Description is a column of my DataTable
dt.AcceptChanges();
GrdV.EditIndex = -1;
GrdV.DataSource = dt;
GrdV.DataBind();
}
}