我是新的ASP.NET开发人员,并试图在GridView中更新一行。我尝试了许多解决方案,但它不起作用。当我更新一行时,不是错误消息,而是不考虑更新。
<asp:GridView ID="grd_quest" Visible = "False" runat="server" CellPadding="4"
DataSourceID="ERP_questionn" ForeColor="#333333" GridLines="None"
AutoGenerateColumns="False" DataKeyNames="QUE_id">
<AlternatingRowStyle BackColor="White" ForeColor="#284775" />
<Columns>
<asp:CommandField ShowEditButton="true" />
<asp:BoundField DataField="QUE_id" HeaderText="ID" ReadOnly="True"
SortExpression="QUE_id" ItemStyle-Width="10%" />
<asp:BoundField DataField="QUE_libelle" HeaderText="Libelle"
SortExpression="QUE_libelle" />
</Columns>
<EditRowStyle BackColor="#999999" />
<FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
<RowStyle BackColor="#F7F6F3" ForeColor="#333333" />
<SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
<SortedAscendingCellStyle BackColor="#E9E7E2" />
<SortedAscendingHeaderStyle BackColor="#506C8C" />
<SortedDescendingCellStyle BackColor="#FFFDF8" />
<SortedDescendingHeaderStyle BackColor="#6F8DAE" />
</asp:GridView>
<asp:SqlDataSource ID="ERP_questionn" runat="server"
ConnectionString="<%$ ConnectionStrings:ERPConnectionString %>"
SelectCommand=""
UpdateCommand=
"UPDATE [TR_QUESTION] SET [QUE_libelle] = @QUE_libelle WHERE [QUE_id] = @QUE_id">
<UpdateParameters>
<asp:Parameter Name="QUE_libelle" Type="String" />
<asp:Parameter Name="QUE_id" Type="Int32" />
</UpdateParameters>
</asp:SqlDataSource>
选择命令不是在这里写的,因为它会在其他列表的功能上更改,因此我在C#中写下SelectCommand
。我希望这对您来说很清楚
[编辑]
我在C#中尝试了其他解决方案:
protected void grd_quest_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
SqlConnection sqlConnection1 = new SqlConnection(connectionString);
int id = Convert.ToInt32(grd_quest.DataKeys[e.RowIndex].Value.ToString());
GridViewRow row = (GridViewRow)grd_quest.Rows[e.RowIndex];
//TextBox txtname=(TextBox)gr.cell[].control[];
TextBox textadd = (TextBox)row.Cells[2].Controls[0];
//TextBox textadd = (TextBox)row.FindControl("txtadd");
//TextBox textc = (TextBox)row.FindControl("txtc");
grd_quest.EditIndex = -1;
sqlConnection1.Open();
//SqlCommand cmd = new SqlCommand("SELECT * FROM detail", conn);
SqlCommand cmd = new SqlCommand("UPDATE TR_QUESTION SET QUE_libelle = @p_libelle where QUE_id = @p_id ", sqlConnection1);
cmd.Parameters.AddWithValue("@p_id", id);
cmd.Parameters.AddWithValue("@p_libelle", textadd.Text);
cmd.ExecuteNonQuery();
sqlConnection1.Close();
grd_quest.DataBind();
}
但它也行不通,我有一个错误消息,他说:
除非指定了UpdateCommand,否则数据源'erp_questionn'不支持更新。我有尝试:updateCommand =",但它不起作用
[编辑新尝试]
protected void grd_quest_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
string id = grd_quest.DataKeys[e.RowIndex].Value.ToString();
string libelle = ((TextBox)grd_quest.Rows[e.RowIndex].Cells[2].Controls[0]).Text;
ERP_questionn.UpdateParameters["QUE_id"].DefaultValue = id;
ERP_questionn.UpdateParameters["QUE_libelle"].DefaultValue = libelle;
ERP_questionn.Update();
//ERP_questionn.SelectCommand = DropDownList1.SelectedValue;
}
当我更新一行时,不是错误消息,而是不考虑更新。
[编辑]
也许可以有所帮助,以在我的GridView中显示我的数据:
protected void lst_facteur_SelectedIndexChanged(object sender, EventArgs e)
{
if (lst_pos.SelectedValue == "1")
{
ERP_questionn.SelectCommand = "select * FROM TR_QUESTION WHERE FAC_id =" + lst_facteur.SelectedValue + " AND QUE_ordreUsine IS NOT NULL";
}
else if (lst_pos.SelectedValue == "2")
{
ERP_questionn.SelectCommand = "select * FROM TR_QUESTION WHERE FAC_id =" + lst_facteur.SelectedValue + " AND QUE_ordreBureau IS NOT NULL";
}
grd_quest.DataBind();
grd_quest.Visible = true;
txt_question.Visible = true;
btn_add_question.Visible = true;
我总是有更新问题...
"UPDATE [TR_QUESTION] SET [QUE_libelle] =? WHERE [QUE_id] =?"
以及此外,您尚未在GridView上设置更新命令事件。
onRowupDated =" cunitustridview_rowupdated"
您必须在> html代码中设置SelectCommand = "SELECT * FROM [TR_QUESTION]"
:
<asp:GridView ID="grd_quest" runat="server" AutoGenerateColumns="False" DataKeyNames="QUE_id" DataSourceID="ERP_questionn">
<Columns>
<asp:CommandField ShowEditButton="True" />
<asp:BoundField DataField="QUE_id" HeaderText="ID" InsertVisible="False" ReadOnly="True" SortExpression="QUE_id" />
<asp:BoundField DataField="QUE_libelle" HeaderText="Libelle" SortExpression="QUE_libelle" />
</Columns>
</asp:GridView>
<asp:SqlDataSource ID="ERP_questionn" runat="server"
ConnectionString="<%$ ConnectionStrings:ERPConnectionString %>"
SelectCommand = "SELECT * FROM [TR_QUESTION]"
UpdateCommand =
"UPDATE [TR_QUESTION] SET [QUE_libelle] = @QUE_libelle WHERE [QUE_id] = @QUE_id">
</asp:SqlDataSource>