我想更新一个球员得分的进球数,因此,如果他为某个进球设定了进球数,我想对他的进球数进行更新... 我的代码中有一个错误,我不知道如何解决。有人可以帮我修复它吗?
我的代码:
string connectionStr = @"Provider=Microsoft.Jet.OleDb.4.0;Data Source=|DataDirectory|\SoccerDataBase.mdb";
using (OleDbConnection sqlCon = new OleDbConnection(connectionStr))
{
sqlCon.Open();
string queryStr = "SELECT Achievement FROM SoccerAchievements WHERE UserID=@AchNums";
OleDbCommand sqlCmd = new OleDbCommand(queryStr, sqlCon);
sqlCmd.Parameters.AddWithValue("@AchNums", (SoccerTable.FooterRow.FindControl("AchNums") as TextBox).Text.Trim());
OleDbDataAdapter dataAdapt = new OleDbDataAdapter(queryStr, sqlCon);
DataSet ds = new DataSet();
dataAdapt.Fill(ds, "SoccerAchievement");
DataRow row = ds.Tables["SoccerAchievement"].Rows[0];
int a = int.Parse(row[3].ToString());
a = a + int.Parse("@AchNums");
string query = "UPDATE SoccerAchievements SET Achievement= '" + a + "' WHERE UserID= @AchNums";
sqlCmd.ExecuteNonQuery();
}
我的GridView HTML代码:
<asp:GridView ID="SoccerTable" runat="server" AutoGenerateColumns="False"
BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px"
CellPadding="3" DataSourceID="AccessDataSource1">
<Columns>
<asp:BoundField DataField="ID" HeaderText="קוד שחקן" InsertVisible="False"
SortExpression="ID" />
<asp:BoundField DataField="Team" HeaderText="קבוצות" SortExpression="Team" />
<asp:BoundField DataField="Players" HeaderText="שחקנים"
SortExpression="Players" />
<asp:TemplateField HeaderText="הישגים">
<FooterTemplate>
<asp:TextBox ID="AchNums" runat="server"></asp:TextBox>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField>
<ItemTemplate>
<asp:Button class = "AddButton" ID="AddButton" runat="server" onclick="AddButton_Click" Text="עדכן" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
<FooterStyle BackColor="White" ForeColor="#000066" />
<HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
<RowStyle ForeColor="#000066" />
<SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
<SortedAscendingCellStyle BackColor="#F1F1F1" />
<SortedAscendingHeaderStyle BackColor="#007DBB" />
<SortedDescendingCellStyle BackColor="#CAC9C9" />
<SortedDescendingHeaderStyle BackColor="#00547E" />
</asp:GridView>
我的错误:位置0没有行。 图片:
请帮助我:)
答案 0 :(得分:1)
替换此
OleDbDataAdapter dataAdapt = new OleDbDataAdapter(queryStr, sqlCon);
用
OleDbDataAdapter dataAdapt = new OleDbDataAdapter(sqlCmd);
不过,您的int.parse
代码可能会再次遇到错误。请更正该错误。