C# 过程或函数“employee_pro”需要未提供的参数“@empid”
我一直在尝试执行GridView。这里,我的数据库名是test,存储过程名是employee_pro。但是,它不断地显示出同样的错误。必要的解决办法是什么C# 过程或函数“employee_pro”需要未提供的参数“@empid”,c#,asp.net,gridview,C#,Asp.net,Gridview,我一直在尝试执行GridView。这里,我的数据库名是test,存储过程名是employee_pro。但是,它不断地显示出同样的错误。必要的解决办法是什么 namespace Insert_update_delete_Stored_Pro { public partial class StoredProcedure : System.Web.UI.Page { string strConnString = ConfigurationManager.ConnectionStrings[
namespace Insert_update_delete_Stored_Pro
{
public partial class StoredProcedure : System.Web.UI.Page
{
string strConnString = ConfigurationManager.ConnectionStrings["test"].ConnectionString;
SqlCommand com;
SqlDataAdapter sqlda;
DataSet ds;
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindGrid();
}
}
protected void BindGrid()
{
SqlConnection con = new SqlConnection(strConnString);
com = new SqlCommand();
con.Open();
com.Connection = con;
com.CommandText = "employee_pro";
com.CommandType = CommandType.StoredProcedure;
com.Parameters.Add(new SqlParameter("@status", SqlDbType.VarChar, 50));
com.Parameters["@status"].Value = "Display";
sqlda = new SqlDataAdapter(com);
ds = new DataSet();
sqlda.Fill(ds);
GridView1.DataSource = ds;
GridView1.DataBind();
con.Close();
}
protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
GridView1.PageIndex = e.NewPageIndex;
BindGrid();
}
protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
GridView1.EditIndex = -1;
BindGrid();
}
protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName.Equals("Add"))
{
TextBox txtname = (TextBox)GridView1.FooterRow.FindControl("txtAddname");
TextBox txtaddress = (TextBox)GridView1.FooterRow.FindControl("txtAddaddress");
TextBox txtdesignation = (TextBox)GridView1.FooterRow.FindControl("txtAdddesignation");
string name, address, designation;
name = txtname.Text;
address = txtaddress.Text;
designation = txtdesignation.Text;
Addemployee(name, address, designation);
GridView1.EditIndex = -1;
BindGrid();
}
}
protected void Addemployee(string name, string address, string designation)
{
SqlConnection con = new SqlConnection(strConnString);
con.Open();
com = new SqlCommand();
com.CommandText = "employee_pro";
com.CommandType = CommandType.StoredProcedure;
com.Connection = con;
com.Parameters.Add(new SqlParameter("@status", SqlDbType.VarChar, 50));
com.Parameters.Add(new SqlParameter("@empid", SqlDbType.Int));
com.Parameters.Add(new SqlParameter("@name", SqlDbType.VarChar, 50));
com.Parameters.Add(new SqlParameter("@address", SqlDbType.VarChar, 50));
com.Parameters.Add(new SqlParameter("@designation", SqlDbType.VarChar, 50));
com.Parameters["@status"].Value = "Add";
com.Parameters["@name"].Value = name;
com.Parameters["@address"].Value = address;
com.Parameters["@designation"].Value = designation;
sqlda = new SqlDataAdapter(com);
ds = new DataSet();
sqlda.Fill(ds);
con.Close();
}
protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
Label empid = (Label)GridView1.Rows[e.RowIndex].FindControl("lblempid");
string eid = empid.Text;
Deleteemployee(eid);
GridView1.EditIndex = -1;
BindGrid();
}
protected void Deleteemployee(string empid)
{
SqlConnection con = new SqlConnection(strConnString);
com = new SqlCommand();
com.CommandText = "employee_pro";
com.CommandType = CommandType.StoredProcedure;
com.Connection = con;
com.Parameters.Add(new SqlParameter("@status", SqlDbType.VarChar, 50));
com.Parameters.Add(new SqlParameter("@empid", SqlDbType.Int));
com.Parameters["@status"].Value = "Delete";
com.Parameters["@empid"].Value = empid;
sqlda = new SqlDataAdapter(com);
ds = new DataSet();
sqlda.Fill(ds);
con.Close();
}
protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
{
GridView1.EditIndex = e.NewEditIndex;
BindGrid();
}
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
Label empid = (Label)GridView1.Rows[e.RowIndex].FindControl("lblempid");
TextBox name = (TextBox)GridView1.Rows[e.RowIndex].FindControl("txtname");
TextBox address = (TextBox)GridView1.Rows[e.RowIndex].FindControl("txtaddress");
TextBox designation = (TextBox)GridView1.Rows[e.RowIndex].FindControl("txtdesignation");
string eid = empid.Text;
string ename = name.Text;
string eaddress = address.Text;
string edesignation = designation.Text;
Updateemployee(eid, ename, eaddress, edesignation);
GridView1.EditIndex = -1;
BindGrid();
}
protected void Updateemployee(string empid, string name, string address, string designation)
{
SqlConnection con = new SqlConnection(strConnString);
com = new SqlCommand();
con.Open();
com.Connection = con;
com.CommandText = "employee_pro";
com.CommandType = CommandType.StoredProcedure;
com.Parameters.Add(new SqlParameter("@empid", SqlDbType.Int));
com.Parameters.Add(new SqlParameter("@status", SqlDbType.VarChar, 50));
com.Parameters.Add(new SqlParameter("@name", SqlDbType.VarChar, 50));
com.Parameters.Add(new SqlParameter("@address", SqlDbType.VarChar, 50));
com.Parameters.Add(new SqlParameter("@designation", SqlDbType.VarChar, 50));
com.Parameters["@empid"].Value = Convert.ToInt32(empid.ToString());
com.Parameters["@status"].Value = "Update";
com.Parameters["@name"].Value = name;
com.Parameters["@address"].Value = address;
com.Parameters["@designation"].Value = designation;
sqlda = new SqlDataAdapter(com);
ds = new DataSet();
sqlda.Fill(ds);
con.Close();
}
}
}我认为应该在BingGrid函数中添加另一个参数@empid。提供一个empid以显示与该empid相关的结果。错误消息表明您缺少一个参数 您应该将@empid添加到BindGrid方法中: 或: 如果Empid应该为null或空,请使用
com.Parameters["@empid"].Value = DBNull.Value
在函数Addemployee中,您添加了一个参数,如下所示:
com.Parameters.Add(new SqlParameter("@empid", SqlDbType.Int));
但您尚未指定参数的值。因此,添加以下行
com.Parameters["@empid"].Value = <Generate Your Employee Id Here>;
正如很多人已经说过的,您需要向BindGrid函数提供雇员ID。您有一个如何在RowUpdate方法中获得它的示例
但是,您应该考虑将其作为存储过程中的可选参数。例如,在删除员工时,我无法想象您需要如何向存储过程提供emp ID参数。您可能需要围绕存储过程的使用进行一些重新设计。
employee\u pro sp的定义是什么?在BindGrid方法中,您没有添加@empid作为参数。您似乎没有为@empid提供值。错误消息是不言自明的@Sumi,你能提供一个包含错误的堆栈跟踪吗?哪种方法失败?没有为BindGrid方法中的employee_pro过程提供@empid输入参数。请检查。请阅读-我们可以停止使用AddWithValue吗-总有改进的余地。非常感谢。com.Parameters.Add(new SqlParameter("@empid", SqlDbType.Int));
com.Parameters["@empid"].Value = <Generate Your Employee Id Here>;