问题描述
我想更新一个球员的进球数,所以如果他进球了,我想更新他的进球数......我的代码中有一个错误,我不知道如何修复它.谁能帮我解决一下,好吗?
I want to Update An Number of goals That a Player Scored so if he socred a goal I want to do an update for his number of goals...I got an Error in my Code And I don't know how to fix it. Can anyone help me to fix it, please?
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";
OleDbCommand sqlCmd = new OleDbCommand(queryStr, sqlCon);
sqlCmd.Parameters.AddWithValue("@AchNums", (SoccerTable.FooterRow.FindControl("txtAchNumsFooter") as TextBox).Text.Trim());
OleDbDataAdapter dataAdapt = new OleDbDataAdapter(sqlCmd);
DataSet ds = new DataSet();
dataAdapt.Fill(ds, "SoccerAchievement");
DataRow row = ds.Tables["SoccerAchievement"].Rows[0];
int a = int.Parse((SoccerTable.FooterRow.FindControl("txtAchNumsFooter") as TextBox).Text.Trim());
a = a + int.Parse("@AchNums");
string query = "UPDATE SoccerAchievements SET Achievement= '" + a + "' WHERE UserID";
sqlCmd.ExecuteNonQuery();
我的 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">
<ItemTemplate>
<asp:DropDownList ID="AchNums" runat="server">
<asp:ListItem>1</asp:ListItem>
<asp:ListItem>2</asp:ListItem>
<asp:ListItem>3</asp:ListItem>
<asp:ListItem>4</asp:ListItem>
<asp:ListItem>5</asp:ListItem>
<asp:ListItem>6</asp:ListItem>
<asp:ListItem>7</asp:ListItem>
<asp:ListItem>8</asp:ListItem>
<asp:ListItem>9</asp:ListItem>
<asp:ListItem>10</asp:ListItem>
</asp:DropDownList>
</ItemTemplate>
<FooterTemplate>
<asp:TextBox ID="txtAchNumsFooter" runat="server" />
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField>
<ItemTemplate>
<asp:Button class = "AddButton" ID="AddButton" runat="server" onclick="AddButton_Click" Text="עדכן" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
我的问题:输入字符串的格式不正确.
My Problem: Input string was not in the correct format.
请帮帮我:(
推荐答案
@Alex 好像是行的格式异常int a = int.Parse((SoccerTable.FooterRow.FindControl("txtAchNumsFooter") as TextBox).Text.Trim());.
@Alex It seems to be like a format exception at the line int a = int.Parse((SoccerTable.FooterRow.FindControl("txtAchNumsFooter") as TextBox).Text.Trim());.
在您的情况下,文本框返回的值可能不是有效的整数值.这就是您收到此错误的原因.
In your case, the possibility is that the value return by the textbox is not a valid integer value. Thats why you are getting this error.
您能否尝试调试您的代码并对这条语句 'SoccerTable.FooterRow.FindControl("txtAchNumsFooter") as TextBox).Text.Trim()' 进行快速观察.检查你得到了什么.
Can you try debugging your code and do quickwatch on this statement 'SoccerTable.FooterRow.FindControl("txtAchNumsFooter") as TextBox).Text.Trim()'. Check what you get.
这篇关于我想更新一个 num 参数并将其汇总到我的数据库中...遇到问题... Gridview的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!