Question

我正在使用visual studio为我的工作制作一个前端数据库。但是我目前收到错误

＆＃34;参数化查询＆＃39;（@ IsNull_Company int，@ Original_Company SQL_VARIANT，@ IsNull_Conta＆＃39;期望参数＆＃39; @ IsNull_Company＆＃39;，没有提供。＆＃34;

当我尝试从服务器上删除某些内容时。我假设这是负责的代码，这只是VS为我做的默认方法。

 this._adapter.DeleteCommand = new global::System.Data.SqlClient.SqlCommand();
            this._adapter.DeleteCommand.Connection = this.Connection;
            this._adapter.DeleteCommand.CommandText = @"DELETE FROM [Employers Contacts]
                         WHERE        (@IsNull_Company = 1 AND Company IS NULL) OR
                         (Company = @Original_Company) AND (@IsNull_Contact = 1 AND Contact IS NULL) OR
                         (Contact = @Original_Contact) AND (@IsNull_Title = 1 AND Title IS NULL) OR
                         (Title = @Original_Title) AND (@IsNull_Phone = 1 AND Phone IS NULL) OR
                         (Phone = @Original_Phone) AND (Cell = @Original_Cell) OR
                         (@IsNull_Cell = 1 AND Cell IS NULL) AND (@IsNull_Status_TWS = 1 AND Status_TWS IS NULL) OR
                         (Status_TWS = @Original_Status_TWS) AND (@IsNull_Email = 1 AND Email IS NULL) OR
                         (Email = @Original_Email) AND (@IsNull_Region = 1 AND Region IS NULL) OR
                         (Region = @Original_Region) AND (@IsNull_Hiring = 1 AND Hiring IS NULL) OR
                         (Hiring = @Original_Hiring) AND (Industry = @Original_Industry)";
            this._adapter.DeleteCommand.CommandType = global::System.Data.CommandType.Text;
            this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@IsNull_Company", global::System.Data.SqlDbType.Int, 0, global::System.Data.ParameterDirection.Input, 0, 0, "", global::System.Data.DataRowVersion.Original, true, null, "", "", ""));
            this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@Original_Company", global::System.Data.SqlDbType.Variant, 1024, global::System.Data.ParameterDirection.Input, 0, 0, "", global::System.Data.DataRowVersion.Original, false, null, "", "", ""));
            this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@IsNull_Contact", global::System.Data.SqlDbType.Int, 0, global::System.Data.ParameterDirection.Input, 0, 0, "", global::System.Data.DataRowVersion.Original, true, null, "", "", ""));
            this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@Original_Contact", global::System.Data.SqlDbType.Variant, 1024, global::System.Data.ParameterDirection.Input, 0, 0, "", global::System.Data.DataRowVersion.Original, false, null, "", "", ""));
            this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@IsNull_Title", global::System.Data.SqlDbType.Int, 0, global::System.Data.ParameterDirection.Input, 0, 0, "", global::System.Data.DataRowVersion.Original, true, null, "", "", ""));
            this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@Original_Title", global::System.Data.SqlDbType.Variant, 1024, global::System.Data.ParameterDirection.Input, 0, 0, "", global::System.Data.DataRowVersion.Original, false, null, "", "", ""));
            this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@IsNull_Phone", global::System.Data.SqlDbType.Int, 0, global::System.Data.ParameterDirection.Input, 0, 0, "", global::System.Data.DataRowVersion.Original, true, null, "", "", ""));
            this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@Original_Phone", global::System.Data.SqlDbType.Variant, 1024, global::System.Data.ParameterDirection.Input, 0, 0, "", global::System.Data.DataRowVersion.Original, false, null, "", "", ""));
            this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@Original_Cell", global::System.Data.SqlDbType.Variant, 1024, global::System.Data.ParameterDirection.Input, 0, 0, "", global::System.Data.DataRowVersion.Original, false, null, "", "", ""));
            this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@IsNull_Cell", global::System.Data.SqlDbType.Int, 0, global::System.Data.ParameterDirection.Input, 0, 0, "", global::System.Data.DataRowVersion.Original, true, null, "", "", ""));
            this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@IsNull_Status_TWS", global::System.Data.SqlDbType.Int, 0, global::System.Data.ParameterDirection.Input, 0, 0, "", global::System.Data.DataRowVersion.Original, true, null, "", "", ""));
            this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@Original_Status_TWS", global::System.Data.SqlDbType.Variant, 1024, global::System.Data.ParameterDirection.Input, 0, 0, "", global::System.Data.DataRowVersion.Original, false, null, "", "", ""));
            this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@IsNull_Email", global::System.Data.SqlDbType.Int, 0, global::System.Data.ParameterDirection.Input, 0, 0, "", global::System.Data.DataRowVersion.Original, true, null, "", "", ""));
            this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@Original_Email", global::System.Data.SqlDbType.Variant, 1024, global::System.Data.ParameterDirection.Input, 0, 0, "", global::System.Data.DataRowVersion.Original, false, null, "", "", ""));
            this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@IsNull_Region", global::System.Data.SqlDbType.Int, 0, global::System.Data.ParameterDirection.Input, 0, 0, "", global::System.Data.DataRowVersion.Original, true, null, "", "", ""));
            this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@Original_Region", global::System.Data.SqlDbType.Variant, 1024, global::System.Data.ParameterDirection.Input, 0, 0, "", global::System.Data.DataRowVersion.Original, false, null, "", "", ""));
            this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@IsNull_Hiring", global::System.Data.SqlDbType.Int, 0, global::System.Data.ParameterDirection.Input, 0, 0, "", global::System.Data.DataRowVersion.Original, true, null, "", "", ""));
            this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@Original_Hiring", global::System.Data.SqlDbType.Variant, 1024, global::System.Data.ParameterDirection.Input, 0, 0, "", global::System.Data.DataRowVersion.Original, false, null, "", "", ""));
            this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@Original_Industry", global::System.Data.SqlDbType.Variant, 1024, global::System.Data.ParameterDirection.Input, 0, 0, "", global::System.Data.DataRowVersion.Original, false, null, "", "", ""));

从错误信息判断我不知道@IsNull_Conta是什么我觉得它切断了@IsNull_Contact的一部分，但我不知道为什么。

编辑：发生错误的实际方法是

private void employer_ContactsBindingNavigatorSaveItem_Click(object sender, EventArgs e)
        {
            DialogResult dialogResult = MessageBox.Show("Are you sure you want to make these changes? (any records deleted or changed " +
                "can not be reverted)", "Confirm Change", MessageBoxButtons.YesNo);
            if (dialogResult == DialogResult.Yes)
            {
                this.Validate();
                this.employer_ContactsBindingSource.EndEdit();
                this.tableAdapterManager.UpdateAll(this.clientEmployerDataSet);
                MessageBox.Show("Your action has been successful");
            }
        }

错误发生在＆＃34; this.tableAdapterManager.UpdateAll（this.clientEmployerDataSet）;＆＃34;线。

Answer 1

您需要在parameters.add的第一对空引号中添加您正在查看的列

应该是：

this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@IsNull_Company", global::System.Data.SqlDbType.Int, 0, global::System.Data.ParameterDirection.Input, 0, 0, "Company", global::System.Data.DataRowVersion.Original, true, null, "", "", ""));
this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@Original_Company", global::System.Data.SqlDbType.NVarChar, 255, global::System.Data.ParameterDirection.Input, 0, 0, "Company", global::System.Data.DataRowVersion.Original, false, null, "", "", ""));
this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@IsNull_Contact", global::System.Data.SqlDbType.Int, 0, global::System.Data.ParameterDirection.Input, 0, 0, "Contact", global::System.Data.DataRowVersion.Original, true, null, "", "", ""));
this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@Original_Contact", global::System.Data.SqlDbType.NVarChar, 255, global::System.Data.ParameterDirection.Input, 0, 0, "Contact", global::System.Data.DataRowVersion.Original, false, null, "", "", ""));
this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@IsNull_Title", global::System.Data.SqlDbType.Int, 0, global::System.Data.ParameterDirection.Input, 0, 0, "Title", global::System.Data.DataRowVersion.Original, true, null, "", "", ""));
this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@Original_Title", global::System.Data.SqlDbType.NVarChar, 255, global::System.Data.ParameterDirection.Input, 0, 0, "Title", global::System.Data.DataRowVersion.Original, false, null, "", "", ""));
this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@IsNull_Phone", global::System.Data.SqlDbType.Int, 0, global::System.Data.ParameterDirection.Input, 0, 0, "Phone", global::System.Data.DataRowVersion.Original, true, null, "", "", ""));
this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@Original_Phone", global::System.Data.SqlDbType.NVarChar, 255, global::System.Data.ParameterDirection.Input, 0, 0, "Phone", global::System.Data.DataRowVersion.Original, false, null, "", "", ""));
this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@Original_Cell", global::System.Data.SqlDbType.NVarChar, 255, global::System.Data.ParameterDirection.Input, 0, 0, "Cell", global::System.Data.DataRowVersion.Original, false, null, "", "", ""));
this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@IsNull_Cell", global::System.Data.SqlDbType.Int, 0, global::System.Data.ParameterDirection.Input, 0, 0, "Cell", global::System.Data.DataRowVersion.Original, true, null, "", "", ""));
this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@IsNull_Status_TWS", global::System.Data.SqlDbType.Int, 0, global::System.Data.ParameterDirection.Input, 0, 0, "Status_TWS", global::System.Data.DataRowVersion.Original, true, null, "", "", ""));
this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@Original_Status_TWS", global::System.Data.SqlDbType.NVarChar, 255, global::System.Data.ParameterDirection.Input, 0, 0, "Status_TWS", global::System.Data.DataRowVersion.Original, false, null, "", "", ""));
this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@IsNull_Email", global::System.Data.SqlDbType.Int, 0, global::System.Data.ParameterDirection.Input, 0, 0, "Email", global::System.Data.DataRowVersion.Original, true, null, "", "", ""));
this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@Original_Email", global::System.Data.SqlDbType.NVarChar, 255, global::System.Data.ParameterDirection.Input, 0, 0, "Email", global::System.Data.DataRowVersion.Original, false, null, "", "", ""));
this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@IsNull_Region", global::System.Data.SqlDbType.Int, 0, global::System.Data.ParameterDirection.Input, 0, 0, "Region", global::System.Data.DataRowVersion.Original, true, null, "", "", ""));
this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@Original_Region", global::System.Data.SqlDbType.NChar, 255, global::System.Data.ParameterDirection.Input, 0, 0, "Region", global::System.Data.DataRowVersion.Original, false, null, "", "", ""));
this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@IsNull_Hiring", global::System.Data.SqlDbType.Int, 0, global::System.Data.ParameterDirection.Input, 0, 0, "Hiring", global::System.Data.DataRowVersion.Original, true, null, "", "", ""));
this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@Original_Hiring", global::System.Data.SqlDbType.Bit, 1, global::System.Data.ParameterDirection.Input, 0, 0, "Hiring", global::System.Data.DataRowVersion.Original, false, null, "", "", ""));
this._adapter.DeleteCommand.Parameters.Add(new global::System.Data.SqlClient.SqlParameter("@Original_Industry", global::System.Data.SqlDbType.NVarChar, 255, global::System.Data.ParameterDirection.Input, 0, 0, "Industry", global::System.Data.DataRowVersion.Original, false, null, "", "", ""));

未提供参数化查询默认vs方法

1 个答案: