Question

将值传递给存储过程获取错误

"Failed to convert parameter value from a String to a Boolean".

在我的代码是

时，我没有明白为什么我会遇到这个问题

C＃代码在这里，

invProject.targetprojectId =Convert.ToInt32(this.txtOrderNumber.Text);
        invProject.projects = this.txtProjectTitle.Text;
        invProject.bridge_cost = Convert.ToDouble(this.txtBridgeCost.Text);
        invProject.high_cost = Convert.ToDouble(this.txtHighwayCost.Text);
        invProject.bridge_comp = this.ddlbridgeComplexity.SelectedValue.ToString();
        invProject.hway_comp = this.ddlHighwayComplexity.SelectedValue.ToString();
        invProject.project_type = this.ddlProjectType.SelectedValue.ToString();
        invProject.proj_Owner = this.ddlProjectOwner.SelectedValue.ToString();
        invProject.ind_Exp = Convert.ToInt32(this.chkIndividualExperience.Checked);

传递的参数如下，

 SqlParameter projectid = cmd.Parameters.Add("@Target_Project_ID", SqlDbType.Int);
           projectid.Value = InvPro.targetprojectId;

       SqlParameter title = cmd.Parameters.Add("@Projects", SqlDbType.VarChar);
       title.Value = InvPro.projects;
       SqlParameter bridgecost = cmd.Parameters.Add("@Bridge_Cost", SqlDbType.Money);
       bridgecost.Value = InvPro.bridge_cost;
       SqlParameter highwaycost = cmd.Parameters.Add("@Hway_Cost", SqlDbType.Money);
       highwaycost.Value = InvPro.high_cost;
       SqlParameter bComplexity = cmd.Parameters.Add("@Bridge_Comp", SqlDbType.VarChar);
       bComplexity.Value = InvPro.bridge_comp;
       SqlParameter hComplexity = cmd.Parameters.Add("@Hway_Comp", SqlDbType.VarChar);
       hComplexity.Value = InvPro.hway_comp;
       SqlParameter cProjectOwner = cmd.Parameters.Add("@ProjectType", SqlDbType.VarChar);
       cProjectOwner.Value = InvPro.project_type;
       SqlParameter ProjectOwner = cmd.Parameters.Add("@Proj_Owner", SqlDbType.VarChar);
       ProjectOwner.Value = InvPro.proj_Owner;
       SqlParameter workclass = cmd.Parameters.Add("@Proj_WCB", SqlDbType.VarChar);
       workclass.Value = InvPro.proj_WCB;
       SqlParameter INdExp = cmd.Parameters.Add("@Ind_Exp", SqlDbType.Bit);
       INdExp.Value = InvPro.proj_WCB;

SP定义参数是，

  @Target_Project_ID int,
      @Projects varchar(50),
      @Bridge_Cost money,
      @Hway_Cost money,
      @Bridge_Comp nvarchar(50),
      @Hway_Comp nvarchar(50),
      @ProjectType nvarchar(50),
      @Proj_Owner nvarchar(50),
      @Proj_WCB nvarchar(50),
      @Ind_Exp bit,

而表格的列是，

Target_Project_ID int
Projects  nvarchar
Bridge_Cost money
Hway_Cost money
Bridge_Comp  nvarchar
Hway_Comp  nvarchar
Proj_WCB  nvarchar
Proj_Owner  nvarchar
Ind_Exp     bit

我已经尝试了很多，但不能删除错误希望很快收到你的消息

由于

Answer 1

你的问题在这里：

   SqlParameter workclass = cmd.Parameters.Add("@Proj_WCB", SqlDbType.VarChar);
   workclass.Value = InvPro.proj_WCB;
   SqlParameter INdExp = cmd.Parameters.Add("@Ind_Exp", SqlDbType.Bit);
   INdExp.Value = InvPro.proj_WCB;

您将两个参数的值设置为同一个对象，而它们具有不同的Sqltypes。一个是VarChar，另一个是bit。

InvPro.proj_WCB可以是String或Boolean。在你的代码中，你将它视为两者兼而有之。

Answer 2

将变量InvPro.proj_WCB的值转换为布尔值将是我的猜测。

无法将参数值从String转换为布尔值传递给SP（ASP.net）

2 个答案: