[英]Checkbox asp.net c# Grid
我目前有一個數據網格
"SELECT * FROM table WHERE Hentet = 'nej';"
在那個網格下,我有它的精確副本,但是
"WHERE Hentet = 'Ja';"
正如您將在代碼中看到的那樣。
兩個網格都可以正常工作並獲取它們應該獲取的數據,但是“網格1”的每一行上都有一個復選框,因此您可以選擇“任意行”,按一下按鈕,然后輸入Nej;
值Nej;
換成Ja;
在該按鈕上單擊,因此具有選中復選框的行將被移動到Grid2,因為它們的值為= Ja
。 Grid2沒有復選框列,因此它僅從grid1到grid2,而不是兩種方式。
網格1
<asp:DataGrid ID="GridView1" runat="server" DataSourceID="SqlDataSource1" AutoGenerateColumns="false">
<Columns>
<asp:TemplateColumn>
<ItemTemplate>
<asp:CheckBox ID="CheckBox1" runat="server"></asp:CheckBox>
</ItemTemplate>
</asp:TemplateColumn>
<asp:BoundColumn DataField="dato" HeaderText="Dato">
</asp:BoundColumn>
<asp:BoundColumn DataField="Antal" HeaderText="Antal">
</asp:BoundColumn>
<asp:Boundcolumn HeaderText="Navn" Datafield="VareNAvn">
</asp:Boundcolumn>
<asp:BoundColumn DataField="KøbtAfBrugerID" HeaderText="Købt af ID">
</asp:BoundColumn>
<asp:Boundcolumn HeaderText="Hented" DataField="Afhented">
</asp:Boundcolumn>
</Columns>
</asp:DataGrid>
<asp:Button ID="Button_Hented" CssClass="btfarve" runat="server" Text="Afhentet" OnClick="Button_Hented_Click" />
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:DatabaseConnectionString1 %>"
SelectCommand="SELECT * FROM [Transactioner] WHERE afhented ='Nej';">
</asp:SqlDataSource>
GRID2
<asp:DataGrid ID="GridView2" runat="server" DataSourceID="SqlDataSource2" AutoGenerateColumns="false">
<Columns>
<asp:BoundColumn DataField="dato" HeaderText="Dato">
</asp:BoundColumn>
<asp:BoundColumn DataField="Antal" HeaderText="Antal">
</asp:BoundColumn>
<asp:Boundcolumn HeaderText="Navn" Datafield="VareNAvn">
</asp:Boundcolumn>
<asp:BoundColumn DataField="KøbtAfBrugerID" HeaderText="Købt af ID">
</asp:BoundColumn>
<asp:Boundcolumn HeaderText="Hented" DataField="Afhented">
</asp:Boundcolumn>
</Columns>
</asp:DataGrid>
<asp:SqlDataSource ID="SqlDataSource2" runat="server"
ConnectionString="<%$ ConnectionStrings:DatabaseConnectionString1 %>"
SelectCommand="SELECT * FROM [Transactioner] WHERE afhented ='Ja';">
</asp:SqlDataSource>
背后的代碼
protected void Button_Hented_Click(object sender, EventArgs e)
{
string Hejsa;
SqlConnection conn = new SqlConnection();
conn.ConnectionString = ConfigurationManager.ConnectionStrings["DatabaseConnectionString1"].ToString();
SqlCommand cmd = new SqlCommand();
cmd.Connection = conn;
cmd.CommandText = "SELECT * FROM Transactioner";
conn.Open();
SqlDataReader reader = cmd.ExecuteReader();
if (reader.Read())
{
Hejsa = reader["Id"].ToString();
foreach (DataGridItem item in GridView1.Items)
{
CheckBox Cb = item.Cells[0].Controls[1] as CheckBox;
if (Cb.Checked)
{
SqlConnection conn2 = new SqlConnection();
conn2.ConnectionString =
ConfigurationManager.ConnectionStrings["DatabaseConnectionString1"].ToString();
SqlCommand cmd2 = new SqlCommand();
cmd2.Connection = conn2;
cmd2.CommandText = "UPDATE Transactioner"
+ " SET Afhented = @Afhented"
+ " where Id = @Id";
cmd2.Parameters.Add("@Afhented", SqlDbType.NVarChar).Value = "Ja";
cmd2.Parameters.Add("@Id", SqlDbType.Int).Value = Hejsa;
conn2.Open();
cmd2.ExecuteNonQuery();
conn2.Close();
}
}
Response.Redirect(Request.RawUrl);
}
conn.Close();
}
所以這就是全部代碼,我完全沒有收到任何錯誤消息,我真的看不到有什么問題了。我真正想要的代碼是單擊按鈕,如果選中了復選框,則將值“ Nej”更改為“ Ja” ”。 抱歉,我的問題很難理解。 Tekar
<asp:DataGrid ID="GridView1" runat="server" DataSourceID="SqlDataSource1" AutoGenerateColumns="false">
<Columns>
<asp:TemplateColumn>
<ItemTemplate>
<asp:CheckBox ID="CheckBox1" runat="server"></asp:CheckBox>
</ItemTemplate>
</asp:TemplateColumn>
<asp:BoundColumn DataField="Id" HeaderText="Id"> <!--New Column Added-->
<asp:BoundColumn DataField="dato" HeaderText="Dato">
</asp:BoundColumn>
<asp:BoundColumn DataField="Antal" HeaderText="Antal">
</asp:BoundColumn>
<asp:Boundcolumn HeaderText="Navn" Datafield="VareNAvn">
</asp:Boundcolumn>
<asp:BoundColumn DataField="KøbtAfBrugerID" HeaderText="Købt af ID">
</asp:BoundColumn>
<asp:Boundcolumn HeaderText="Hented" DataField="Afhented">
</asp:Boundcolumn>
</Columns>
</asp:DataGrid>
<asp:Button ID="Button_Hented" CssClass="btfarve" runat="server" Text="Afhentet" OnClick="Button_Hented_Click" />
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:DatabaseConnectionString1 %>"
SelectCommand="SELECT * FROM [Transactioner] WHERE afhented ='Nej';">
</asp:SqlDataSource>
在您的按鈕Click事件中,找到您要更新的記錄的ID。
protected void Button_Hented_Click(object sender, EventArgs e)
{
string Hejsa;
// No need to keep on recreating these objects in a loop.
SqlConnection conn2 = new SqlConnection();
conn2.ConnectionString =
ConfigurationManager.ConnectionStrings["DatabaseConnectionString1"].ToString();
SqlCommand cmd2 = new SqlCommand();
cmd2.Connection = conn2;
conn2.Open();
foreach (DataGridItem item in GridView1.Items)
{
CheckBox Cb = item.Cells[0].Controls[1] as CheckBox;
if (Cb.Checked)
{
Hesja = item.Cells[1].Text.Trim(); // Get the id of checked record
cmd2.CommandText = "UPDATE Transactioner"
+ " SET Afhented = @Afhented"
+ " where Id = @Id";
cmd2.Parameters.Add("@Afhented", SqlDbType.NVarChar).Value = "Ja";
cmd2.Parameters.Add("@Id", SqlDbType.Int).Value = Hejsa;
cmd2.ExecuteNonQuery();
}
}
conn2.Close();
Response.Redirect(Request.RawUrl);
}
如果要從Gridview隱藏新添加的Id列,請通過實現gridview的行數據綁定事件來隱藏該列。
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