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SQLデータベースでgridviewを作成しました.3つのテキストボックス "CountryID"、 "Name"、 "CountryNotes"を作成し、Webページにボタンを追加しました。 dbとグリッドビューに入力されます。私は編集や更新のためのコーディングを行っていますが、すべてが完璧に動作していますが、更新ボタンをクリックすると詳細がグリッド表示に更新されますが、テキストボックスはクリアされません。ここでGridView、EDIT、更新
私は私のHTMLコードを追加しています：
<form id="form1" runat="server">
<div>
<asp:ScriptManager ID="script1" runat="server"></asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<table align="Center" style="width: 50%;">
<tr>
<td class="auto-style1">
<asp:Label ID="Label1" runat="server" Text="CountryID" ForeColor="#CC0000"></asp:Label>
</td>
<td>
<asp:TextBox ID="Text1" runat="server"></asp:TextBox>
</td>
</tr>
<tr>
<td class="auto-style1">
<asp:Label ID="Label2" runat="server" Text="Name" ForeColor="#CC0000"></asp:Label>
</td>
<td>
<asp:TextBox ID="Text2" runat="server"></asp:TextBox>
</td>
</tr>
<tr>
<td class="auto-style1">
<asp:Label ID="Label3" runat="server" Text="CountryNotes" ForeColor="#CC0000"></asp:Label>
</td>
<td>
<asp:TextBox ID="Text3" runat="server"></asp:TextBox>
</td>
</tr>
<tr>
<td class="auto-style1">
<asp:Button ID="Button1" runat="server" Text="Add" BackColor="#CC0000" ForeColor="White" ToolTip="Insert" OnClick="Button1_Click" />
</td>
<td>
<asp:Button ID="Button2" Visible="false" runat="server" BackColor="#CC0000" ForeColor="White" OnClick="Button2_Click" Text="Cancel" />
</td>
</tr>
</table>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="CountryID" DataSourceID="SqlDataSource1" CellPadding="4" ForeColor="#333333" GridLines="None" OnRowCommand="Row_edit">
<AlternatingRowStyle BackColor="White" ForeColor="#284775" />
<Columns>
<asp:BoundField DataField="CountryID" HeaderText="CountryID" ReadOnly="True" SortExpression="CountryID" />
<asp:BoundField DataField="Name" HeaderText="Name" SortExpression="Name" />
<asp:BoundField DataField="CountryNotes" HeaderText="CountryNotes" SortExpression="CountryNotes" />
<asp:ButtonField ButtonType="Image" ImageUrl="~/Edit.png" CommandName="EditRow" />
<asp:ButtonField ButtonType="Image" ImageUrl="~/Delete.png" CommandName="DeleteRow" />
</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>
</ContentTemplate>
</asp:UpdatePanel>
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConflictDetection="CompareAllValues" ConnectionString="<%$ ConnectionStrings:ATSConnectionString %>" DeleteCommand="DELETE FROM [Country1] WHERE [CountryID] = @original_CountryID AND [Name] = @original_Name AND [CountryNotes] = @original_CountryNotes" InsertCommand="INSERT INTO [Country1] ([CountryID], [Name], [CountryNotes]) VALUES (@CountryID, @Name, @CountryNotes)" OldValuesParameterFormatString="original_{0}" SelectCommand="SELECT CountryID, Name, CountryNotes FROM Country1" UpdateCommand="UPDATE [Country1] SET [Name] = @Name, [CountryNotes] = @CountryNotes WHERE [CountryID] = @original_CountryID AND [Name] = @original_Name AND [CountryNotes] = @original_CountryNotes">
<DeleteParameters>
<asp:Parameter Name="original_CountryID" Type="Int32" />
<asp:Parameter Name="original_Name" Type="String" />
<asp:Parameter Name="original_CountryNotes" Type="String" />
</DeleteParameters>
<InsertParameters>
<asp:Parameter Name="CountryID" Type="Int32" />
<asp:Parameter Name="Name" Type="String" />
<asp:Parameter Name="CountryNotes" Type="String" />
</InsertParameters>
<UpdateParameters>
<asp:Parameter Name="Name" Type="String" />
<asp:Parameter Name="CountryNotes" Type="String" />
<asp:Parameter Name="original_CountryID" Type="Int32" />
<asp:Parameter Name="original_Name" Type="String" />
<asp:Parameter Name="original_CountryNotes" Type="String" />
</UpdateParameters>
</asp:SqlDataSource>
</div>
</form>
ここで私はC＃コード取り付けています：
public partial class Country : System.Web.UI.Page
{
SqlConnection con;
SqlCommand cmd;
public void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
GridView1.DataBind();
}
}
protected void Button1_Click(object sender, EventArgs e)
{
if (Button1.ToolTip == "Insert")
{
con = new SqlConnection("Data Source=RYI-SYS-004;Initial Catalog=ATS;Integrated Security=True");
cmd = new SqlCommand("insert into Country1 (CountryID,Name,CountryNotes) values(@CountryID, @Name, @CountryNotes)", con);
cmd.Parameters.AddWithValue("@CountryID", Text1.Text);
cmd.Parameters.AddWithValue("@Name", Text2.Text);
cmd.Parameters.AddWithValue("@CountryNotes", Text3.Text);
con.Open();
cmd.ExecuteNonQuery();
con.Close();
}
else if (Button1.ToolTip == "Update")
{
int id = Convert.ToInt32(ViewState["CountryID"]);
update(id);
}
}
protected void Row_edit(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName == "EditRow")
{
int nRowIndex = Int32.Parse(e.CommandArgument.ToString());
Int32 nCountryID = Convert.ToInt32(GridView1.DataKeys[nRowIndex].Value);
GridViewRow row = GridView1.Rows[nRowIndex];
Text1.Text = row.Cells[0].Text;
Text2.Text = row.Cells[1].Text;
Text3.Text = row.Cells[2].Text;
Button1.ToolTip = "Update";
Button1.Text = "Update";
Button2.Visible = true;
int CountryID = Convert.ToInt32(GridView1.DataKeys[row.RowIndex].Values["CountryID"].ToString());
ViewState["CountryId"] = CountryID.ToString();
}
else if (e.CommandName == "DeleteRow")
{
int id = Int32.Parse(e.CommandArgument.ToString());
GridView1.DeleteRow(id);
}
}
public void update(int id)
{
con = new SqlConnection("Data Source=RYI-SYS-004;Initial Catalog=ATS;Integrated Security=True");
int CountryId = id;
string str = "update Country1 set Name='" + Text2.Text + "', CountryNotes='" + Text3.Text + "' where CountryID='" + Text1.Text + "'";
cmd = new SqlCommand(str, con);
cmd.Parameters.AddWithValue("@Name", Text2.Text);
cmd.Parameters.AddWithValue("@CountryNotes", Text3.Text);
con.Open();
cmd.ExecuteNonQuery();
con.Close();
GridView1.DataBind();
}
protected void Button2_Click(object sender, EventArgs e)
{
Button1.Text = "Add";
Button2.Visible = false;
Text1.Text = "";
Text2.Text = "";
Text3.Text = "";
}
「ツールヒント」ではなくボタンの「CommandName」プロパティを使用してみてください。 'CommandName'が標準です。 –